Exhibit 99.1

FOR IMMEDIATE RELEASE

MOBILE MINI REPORTS FOURTH QUARTER AND FULL YEAR RESULTS
Free Cash Flow of Approximately $18.6 Million in Fourth Quarter
40.0% Non-GAAP EBITDA Margin Achieved;

Third Sequential Quarter of Revenue and EBITDA Growth

Looks for Top and Bottom Line Growth in 2011 and Plans to Enter at Least Six New Markets

Tempe, AZ — February 28, 2011 — Mobile Mini, Inc. (NASDAQ GS: MINI) today reported GAAP and non-GAAP financial results for the fourth quarter and year ended December 31, 2010.

Non-GAAP Fourth Quarter 2010

•		Total revenues were $87.4 million;
•		Leasing revenues were $76.3 million and comprised 87.3% of total revenues;
•		Sales revenues were $10.0 million with margins of 32.9%;

•

EBITDA was $34.9 million or 40.0% of total revenues; and

•

Net income was $7.8 million or $0.18 per diluted share.

Other Fourth Quarter 2010 Highlights

•

Free cash flow was $18.6 million;

•

Net debt was paid down by $6.9 million after payment of the $8.9 million call premium relating to our recent senior notes refinancing;

•

Yield (total lease revenues per unit on rent) increased 4.0% compared to the fourth quarter of 2009 primarily due to an increase in trucking and ancillary revenues;

•

Average utilization rate was 55.5% in the fourth quarter, up from 53.3% in the preceding quarter; and

•

Excess availability under our revolver at December 31, 2010 was $385.9 million.

Non-GAAP 2010 Full-Year Highlights

•		Total revenues were $330.8 million;
•		Leasing revenues were $295.0 million and comprised 89.2% of total revenues;
•		Sales revenues were $33.2 million with margins of 33.7%;

•

EBITDA was $129.9 million or 39.3% of total revenues;

•

Net income was $23.3 million or $0.53 per diluted share;

•

Free cash flow was $66.2 million; and

•

Net debt was reduced by $55.7 million after payment of the $8.9 million call premium relating to our recent senior notes refinancing.

Non-GAAP results for 2010 exclude $11.0 million of debt restructuring expense in connection with the redemption of $170.6 million of 9.75% Senior Notes for the fourth quarter and full year; $0.5 million of deferred financing costs for the full year relating to a $50.0 million Company-elected reduction in our line of credit and $0.3 million and $4.3 million for the fourth quarter and full year, respectively, of expenses relating primarily to ongoing restructuring of our operations.

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Mobile Mini, Inc. News Release February 28, 2011		Page 2

Business Overview

Mobile Mini’s Chairman, President & CEO, Steven Bunger stated, “We closed the year on a solid note with our third sequential quarter of increasing revenues and non-GAAP EBITDA. In the final quarter of the year, seasonally our strongest, total revenues rose 3.3% and non-GAAP EBITDA rose 5.9% from 2010 third quarter levels. These increases were driven by an increase in utilization. A confluence of factors, including the improving economic climate, the slow but steady return of construction-related customers and the repositioning of underutilized lease assets to our new markets and other higher demand locations, are among the reasons for the ongoing gains in utilization rates. At year end, utilization rose to 54.9% from 54.1% at September 30^th, 53.3% at June 30^th and 52.1% at March 31^st. At the same time, lease revenues per unit on rent have also been improving, with fourth quarter 2010 yield up 4.0% from the same period in 2009.”

He continued, “In 2010, we cut approximately $13.2 million of non-GAAP selling, general and administrative expenses (“SG&A”). The utilization of low-cost operational yards supported by full-service branches combined with the bifurcation of our sales force and our new logistics delivery system, are proving to be more than just cost savings initiatives. We believe that we’ve achieved lasting productivity and efficiency gains from these programs. We now have a leaner, more productive organization on which to build. In 2011, we plan to enter at least six new markets, just as we did in mid-2010 in Omaha, Washington, D.C. and Virginia Beach/Norfolk, by continuing to open low-cost operational yards and reposition idle lease fleet from nearby locations. Supported by our National Sales Center (“NSC”) and local advertising, all three new locations were EBITDA-positive by year-end.”

Mr. Bunger also noted, “Business has been improving at our European operations due in part to the benefits of ongoing cost savings and efficiencies and our hybrid sales model. As compared to the third quarter, fourth quarter non-GAAP EBITDA rose 10.3%.”

Mark Funk, Mobile Mini’s Executive Vice President & CFO noted, “As of December 31, 2010, we had generated free cash flow for twelve consecutive quarters. Fourth quarter free cash flow totaled $18.6 million and for the year was $66.2 million. In 2010, proceeds generated from the sale of units in the fleet exceeded all of our capital expenditure needs by $5.4 million, which along with cash flow from operations were used to pay down our debt. During the fourth quarter we repaid another $6.9 million of debt, bringing our debt repayment to $55.7 million for all of 2010. Debt repayment before the payment of the call premium on our recent senior notes refinancing would have been $64.6 million for 2010. As previously announced, we expect our net capital expenditures to be nominal for 2011. For the foreseeable future, as the economy improves and utilization follows suit, we have sufficient lease assets to put on rent to grow the business, both at existing locations and those in the planning stage. For these reasons, we expect our free cash flow and our debt repayment to accelerate in the future.”

Mr. Funk summarized, “Since the acquisition of Mobile Storage Group in June 2008, the Company has generated free cash flow of $178.5 million and reduced its debt by $160.0 million.”

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Mobile Mini, Inc. News Release February 28, 2011		Page 3

Mr. Funk also noted, “We are pleased with the outcome of our $200 million senior note refinancing completed in November 2010 that allowed us replace 9.75% senior notes with 7.875% senior notes and extend our note maturity for more than six years from 2014 to 2020. This refinancing allows us to reduce interest expense, including the amortization of issuance costs, by approximately $2.5 million per year. With $385.9 million of excess borrowing availability at year-end and expectations of further debt reduction in 2011, we elected to decrease our credit facility by $50 million during the third quarter thereby reducing associated unused line fees under our now $850 million line of credit.”

In closing, Mr. Funk noted, “The actions taken operationally and financially should enhance the operating leverage inherent in our business model as the economy strengthens and our utilization improves. We expect to achieve top and bottom line growth in 2011.”

EBITDA, EBITDA margin, non-GAAP SG&A and free cash flow are non-GAAP financial measures as defined by Securities and Exchange Commission (“SEC”) rules. The method of reconciliation of EBITDA, EBITDA margin, non-GAAP SG&A and free cash flow to the most directly comparable GAAP financial measures can be found later in this release.

Conference Call

Mobile Mini will host a conference call today, Monday, February 28, 2011 at 12 noon ET to review these results. To listen to the call live, dial (201) 689-8345 and ask for the Mobile Mini Conference Call or go to www.mobilemini.com and click on the Investors section. Additionally, a slide presentation that will accompany the call will be posted at www.mobilemini.com on the Investors section and will be available in advance and after the call. We will also post the method of reconciliation of non-GAAP financial measures used in the slide show to the most directly comparable GAAP financial measures. Please go to the website 15 minutes early to download and install any necessary audio software. If you are unable to listen live, a replay of the conference call can be accessed for approximately 14 days after the call at Mobile Mini’s website.

Mobile Mini, Inc. is the world’s leading provider of portable storage solutions through its total lease fleet of approximately 245,500 portable storage and office units with 121 locations in the U.S., United Kingdom, Canada and The Netherlands. Mobile Mini is included on the Russell 2000^® and 3000^® Indexes and the S&P Small Cap Index.

This news release contains forward-looking statements, particularly regarding growth, free cash flow, ability to enter new markets, efficiency gains from logistics systems, borrowing availability, enhancement of operating leverage, higher and lasting productivity, increase in utilization, and increasing debt pay down, which involve risks and uncertainties that could cause actual results to differ materially from those currently anticipated. Risks and uncertainties that may affect future results include those that are described from time to time in the Company’s SEC filings. These forward-looking statements represent the judgment of the Company, as of the date of this release, and Mobile Mini disclaims any intent or obligation to update forward-looking statements.

CONTACT:		-OR-		INVESTOR RELATIONS COUNSEL:
Mark Funk, Executive VP &				The Equity Group Inc.
Chief Financial Officer				Linda Latman (212) 836-9609
Mobile Mini, Inc.				Lena Cati (212) 836-9611
(480) 477-0241
www.mobilemini.com

(See Accompanying Tables)

Mobile Mini, Inc. News Release February 28, 2011		Page 4

Mobile Mini, Inc. Condensed Consolidated Statements of Income
(Unaudited)/(in 000’s except per share data)/(includes effects of rounding)

		Three Months Ended								Three Months Ended
		December 31,								December 31,
		2010				2010				2009				2009
		Actual				Non-GAAP (1)				Actual				Non-GAAP (1)
Revenues:
Leasing		$	76,345			$	76,345			$	77,510			$	77,510
Sales			10,030				10,030				9,194				9,194
Other			1,044				1,044				583				583
Total revenues			87,419				87,419				87,287				87,287
Cost of sales			6,731				6,731				6,086				6,086
Leasing, selling and general expenses (2)			45,761				45,756				44,859				44,024
Integration, merger and restructuring expenses (3)			342				—				1,930				—
Depreciation and amortization			8,758				8,758				9,168				9,168
Total costs and expenses			61,592				61,245				62,043				59,278
Income from operations			25,827				26,174				25,244				28,009
Other income (expense):
Interest expense			(13,295	)			(13,295	)			(14,702	)			(14,702	)
Debt restructuring expense (4)			(11,024	)			—				—				—
Income before provision for income taxes			1,508				12,879				10,542				13,307
Provision for income taxes			657				5,033				4,557				5,598
Net income			851				7,846				5,985				7,709
Earnings allocable to preferred stockholders			(159	)			(1,477	)			(1,087	)			(1,465	)
Net income available to common stockholders		$	692			$	6,369			$	4,898			$	6,244
Earnings per share:
Basic		$	0.02			$	0.18			$	0.14			$	0.18
Diluted		$	0.02			$	0.18			$	0.14			$	0.18
Weighted average number of common and common share equivalents outstanding:
Basic			35,332				35,332				34,914				34,914
Diluted			44,131				44,131				43,487				43,487
EBITDA		$	34,585			$	34,932			$	34,412			$	37,177

Mobile Mini, Inc. News Release		Page 5
February 28, 2011

Mobile Mini, Inc. Condensed Consolidated Statements of Income

(Unaudited)/(in 000’s except per share data)/(includes effects of rounding)

		Twelve Months Ended								Twelve Months Ended
		December 31,								December 31,
		2010				2010				2009				2009
		Actual				Non-GAAP (1)				Actual				Non-GAAP (1)
Revenues:
Leasing		$	295,034			$	295,034			$	333,521			$	333,521
Sales			33,156				33,156				38,605				38,605
Other			2,567				2,567				2,335				2,335
Total revenues			330,757				330,757				374,461				374,461
Costs and expenses:
Cost of sales			21,997				21,997				25,795				25,795
Leasing, selling and general expenses (2)			179,121				178,846				192,861				192,026
Integration, merger and restructuring expenses (3)			4,014				—				11,305				—
Depreciation and amortization			35,686				35,686				39,082				39,082
Total costs and expenses			240,818				236,529				269,043				256,903
Income from operations			89,939				94,228				105,418				117,558
Other income (expense):
Interest income			1				1				29				29
Interest expense			(56,430	)			(56,430	)			(59,504	)			(59,504	)
Debt restructuring expense (4)			(11,024	)			—				—				—
Deferred financing costs write-off (5)			(525	)			—				—				—
Foreign currency exchange			(9	)			(9	)			(88	)			(88	)
Income before provision for income taxes			21,952				37,790				45,855				57,995
Provision for income taxes			8,443				14,538				18,057				22,642
Net income			13,509				23,252				27,798				35,353
Earnings allocable to preferred stockholders			(2,550	)			(4,367	)			(5,431	)			(6,971	)
Net income available to common stockholders		$	10,959			$	18,885			$	22,367			$	28,382
Earnings per share:
Basic		$	0.31			$	0.54			$	0.65			$	0.82
Diluted		$	0.31			$	0.53			$	0.64			$	0.82
Weighted average number of common and common share equivalents outstanding:
Basic			35,196				35,196				34,597				34,597
Diluted			43,829				43,829				43,252				43,252
EBITDA		$	125,617			$	129,906			$	144,441			$	156,581

Mobile Mini, Inc. News Release		Page 6
February 28, 2011

		Non-GAAP Reconciliation to Nearest Comparable																Non-GAAP Reconciliation to Nearest Comparable
		GAAP Measure																GAAP Measure
		Three Months Ended December 31, 2010																Three Months Ended December 31, 2009
		(in thousands except per share data)																(in thousands except per share data)
		(includes effects of rounding)																(includes effects of rounding)
						Integration, merger				Debt												Integration, merger
						and restructuring				restructuring												and restructuring
		Non-GAAP (1)				expenses & other (2)				expense (3)				GAAP				Non-GAAP (1)				expenses & other (2)				GAAP
Revenues		$	87,419			$	—			$	—			$	87,419			$	87,287			$	—			$	87,287
EBITDA		$	34,932			$	(347	)		$	—			$	34,585			$	37,177			$	(2,765	)		$	34,412
EBITDA margin			40.0	%			(0.4	)%			—	%			39.6	%			42.6	%			(3.2	)%			39.4	%
Operating income		$	26,174			$	(347	)		$	—			$	25,827			$	28,009			$	(2,765	)		$	25,244
Operating income margin			29.9	%			(0.4	)%			—	%			29.5	%			32.1	%			(3.2	)%			28.9	%
Pre tax income		$	12,879			$	(347	)		$	(11,024	)		$	1,508			$	13,307			$	(2,765	)		$	10,542
Net income		$	7,846			$	(215	)		$	(6,780	)		$	851			$	7,709			$	(1,724	)		$	5,985
Diluted earnings per share		$	0.18			$	(0.01	)		$	(0.15	)		$	0.02			$	0.18			$	(0.04	)		$	0.14

		Non-GAAP Reconciliation to Nearest Comparable																				Non-GAAP Reconciliation to Nearest Comparable
		GAAP Measure																				GAAP Measure
		Twelve Months Ended December 31, 2010																				Twelve Months Ended December 31, 2009
		(in thousands except per share data)																				(in thousands except per share data)
		(includes effects of rounding)																				(includes effects of rounding)
						Integration,
						merger and								Deferred
						restructuring				Debt				financing												Integration, merger
						expenses &				restructuring				costs write-												and restructuring
		Non-GAAP (1)				other (2)				expense (3)				off (4)				GAAP				Non-GAAP (1)				expenses & other (2)				GAAP
Revenues		$	330,757			$	—			$	—			$	—			$	330,757			$	374,461			$	—			$	374,461
EBITDA		$	129,906			$	(4,289	)		$	—			$	—			$	125,617			$	156,581			$	(12,140	)		$	144,441
EBITDA margin			39.3	%			(1.3	)%			(0.0	)%			0.0	%			38.0	%			41.8	%			(3.2	)%			38.6	%
Operating income		$	94,228			$	(4,289	)		$	—			$	—			$	89,939			$	117,558			$	(12,140	)		$	105,418
Operating income margin			28.5	%			(1.3	)%			(0.0	)%			0.0	%			27.2	%			31.4	%			(3.2	)%			28.2	%
Pre tax income		$	37,790			$	(4,289	)		$	(11,024	)		$	(525	)		$	21,952			$	57,995			$	(12,140	)		$	45,855
Net income		$	23,252			$	(2,640	)		$	(6,780	)		$	(323	)		$	13,509			$	35,353			$	(7,555	)		$	27,798
Diluted earnings per share		$	0.53			$	(0.06	)		$	(0.15	)		$	(0.01	)		$	0.31			$	0.82			$	(0.18	)		$	0.64

Mobile Mini, Inc. News Release		Page 7
February 28, 2011

This press release includes the financial measures “EBITDA”, “EBITDA margin”, “non-GAAP SG&A” and “free cash flow”. These measurements may be deemed a “non-GAAP financial measure” under rules of the SEC, including Regulation G. This non-GAAP financial information may be determined or calculated differently by other companies.

EBITDA is defined as net income before interest expense, income taxes, depreciation and amortization, and if applicable, debt restructuring or extinguishment costs. We typically further adjust EBITDA to ignore the effect of what we consider transactions or events not related to our core business to arrive at non-GAAP EBITDA in the reconciliation below. The GAAP financial measure that is most directly comparable to EBITDA is net cash provided by operating activities. EBITDA margin is calculated by dividing consolidated EBITDA by total revenues. The GAAP financial measure that is most directly comparable to EBITDA margin is operating margin, which represents operating income divided by revenues. We present EBITDA and EBITDA margin because we believe they provide useful information regarding our ability to meet our future debt payment requirements, capital expenditures and working capital requirements and they provide an overall evaluation of our financial condition. In addition, EBITDA is a component of certain financial covenants under our revolving credit facility and is used to determine our available borrowing ability and the interest rate. We include EBITDA in the earnings announcement to provide transparency to investors. EBITDA has certain limitations as an analytical tool and should not be used as a substitute for net income, cash flows, or other consolidated income or cash flow data prepared in accordance with GAAP or as a measure of our profitability or our liquidity. EBITDA margin is presented along with the operating margin so as not to imply that more emphasis should be placed on it than the corresponding GAAP measure.

Free cash flow is defined as net cash provided by operating activities, less net cash used in investing activities, excluding acquisitions. Free cash flow is a non-GAAP financial measure and is not intended to replace net cash provided by operating activities, the most directly comparable GAAP financial measure. We present free cash flow because we believe it provides useful information regarding our liquidity and ability to meet our short-term obligations. In particular, free cash flow indicates the amount of cash available after capital expenditures for, among other things, investments in the Company’s existing businesses, debt service obligations and strategic acquisitions.

Non-GAAP SG&A permits a comparative assessment of our SG&A expenses by excluding certain one-time expenses. We define non-GAAP SG&A as GAAP selling, general and administrative expense less approximately $0.3 million of one-time expenses relating primarily to the previously disclosed purported class action lawsuit and losses related to flood damage.

Mobile Mini, Inc. News Release February 28, 2011		Page 8

A reconciliation of EBITDA to net cash provided by operating activities and net income to EBITDA and non-GAAP EBITDA, as well as a reconciliation of net cash provided by operating activities to free cash flow, follows. These reconciliations are in thousands and include effects of rounding:

		Three Months Ended								Twelve Months Ended
		December 31,								December 31,
		2010				2009				2010				2009
		(In thousands)								(In thousands)
Reconciliation of EBITDA to Net cash provided by operating activities:
EBITDA		$	34,585			$	34,412			$	125,617			$	144,441
Interest paid			(15,582	)			(11,393	)			(56,582	)			(54,817	)
Income and franchise taxes paid			(87	)			(91	)			(823	)			(1,055	)
Share-based compensation expense			1,387				676				6,292				5,782
Gain on sale of lease fleet units			(2,884	)			(2,856	)			(10,045	)			(11,661	)
Gain loss on disposal of property, plant and equipment			113				154				34				52
Changes in certain assets and liabilities:
Receivables			894				1,434				(2,077	)			21,327
Inventories			913				903				2,506				3,691
Deposits and prepaid expenses			(1,336	)			289				1,486				3,412
Other assets and intangibles			40				(176	)			(873	)			(845	)
Accounts payable and accrued liabilities			589				(5,207	)			(4,730	)			(23,557	)
Net cash provided by operating activities		$	18,632			$	18,145			$	60,805			$	86,770
Reconciliation of Net income to EBITDA and Non-GAAP EBITDA:
Net income		$	851			$	5,985			$	13,509			$	27,798
Interest expense			13,295				14,702				56,430				59,504
Provision for income taxes			657				4,557				8,443				18,057
Depreciation and amortization			8,758				9,168				35,686				39,082
Debt restructuring expense			11,024				—				11,024				—
Deferred financing costs write-off			—				—				525				—
EBITDA			34,585				34,412				125,617				144,441
Integration, merger and restructuring expenses & other			347				2,765				4,289				12,140
Non-GAAP EBITDA		$	34,932			$	37,177			$	129,906			$	156,581
Reconciliation of Free cash flow:
Net cash provided by operating activities		$	18,632			$	18,145			$	60,805			$	86,770
Additions to lease fleet			(3,871	)			(4,995	)			(15,103	)			(21,517	)
Proceeds from sale of lease fleet units			8,594				8,064				28,860				33,495
Additions to property, plant and equipment			(4,784	)			(2,159	)			(8,555	)			(10,294	)
Proceeds from sale of property, plant and equipment			29				431				149				1,252
Net capital (expenditures) proceeds			(32	)			1,341				5,351				2,936
Free cash flow		$	18,600			$	19,486			$	66,156			$	89,706

Mobile Mini, Inc. News Release February 28, 2011		Page 9

Mobile Mini, Inc.
Condensed Consolidated Balance Sheets
(in 000’s except per share data)
(includes effects of rounding)

		December 31,				December 31,
		2010				2009
		(unaudited)				(audited)
ASSETS
Cash		$	1,634			$	1,740
Receivables, net			42,678				40,867
Inventories			19,569				22,147
Lease fleet, net			1,028,403				1,055,328
Property, plant and equipment, net			80,731				84,160
Deposits and prepaid expenses			8,405				9,916
Other assets and intangibles, net			23,478				26,643
Goodwill			511,419				513,238
Total assets		$	1,716,317			$	1,754,039
LIABILITIES AND STOCKHOLDERS’ EQUITY
Liabilities:
Accounts payable		$	13,607			$	14,130
Accrued liabilities			49,276				64,915
Lines of credit			396,882				473,655
Notes payable			289				1,128
Obligations under capital leases			2,576				4,061
Senior Notes, net			371,655				345,402
Deferred income taxes			165,567				155,697
Total liabilities			999,852				1,058,988
Commitments and contingencies
Convertible preferred stock; $.01 par value, 20,000 shares authorized, 8,556 issued and 8,191 outstanding at December 31, 2010 and December 31, 2009, stated at liquidation preference values			147,427				147,427
Stockholders’ equity:
Common stock; $.01 par value, 95,000 shares authorized, 38,963 issued and 36,787 outstanding at December 31, 2010 and 38,451 issued and 36,276 outstanding at December 31, 2009			390				385
Additional paid-in capital			349,693				341,597
Retained earnings			284,242				270,733
Accumulated other comprehensive loss			(25,987	)			(25,791	)
Treasury stock, at cost, 2,175 shares			(39,300	)			(39,300	)
Total stockholders’ equity			569,038				547,624
Total liabilities and stockholders’ equity		$	1,716,317			$	1,754,039