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Index: Demographics / Subcategory: Demographics

Population Size & Growth

Date posted: 07/01/2009

The population data are based on United States Census (American Factfinder) information from 1990 and 2000, and on estimates from the Colorado Department of Local Affairs (DOLA), and the Larimer County Planning Department.

What this chart shows: Total Population of Larimer County, 1999 - 2008

Total Population of Larimer County, 1999 - 2008

Data Source:

See data table

What this chart shows: Estimated Population Growth in Larimer County, 2009 - 2018

Estimated Population Growth in Larimer County, 2009 - 2018

Data Source: Colorado Department of Local Affairs (DOLA)

See data table

What these data tell us:

Larimer County's population grew by approximately 16% between 2000 and 2008. This increase can be attributed to domestic migration (22,284 more residents having arrived than left between 2000 and 2008), natural change (15,866 more births than deaths between 2000 and 2008) and international migration (4,554 more residents having arrived than left between 2000 and 2008) [U.S. Census Bureau*]. Colorado's Department of Local Affairs Demography Office estimates that the annual population will increase each year by approximately 2% through 2018.

*U.S. Census Bureau population estimates are different from DOLA population estimates due to different estimates methodologies. U.S. Census Bureau's 2008 population estimate for Larimer County was 292,825 compared to a DOLA population estimate of 294,570.

What this chart shows: Percentage Change in Population for Colorado, Larimer County & Communities - 1990 to 2000

Percentage Change in Population for Colorado, Larimer County & Communities - 1990 to 2000

Data Source: United States Census - American Factfinder

See data table

What this chart shows: Population in Larimer County's Largest Cities & Unincorporated Area - 1990, 2000-2008

Population in Larimer County's Largest Cities & Unincorporated Area - 1990, 2000-2008

Data Source:

See data table

What this chart shows: Population in Larimer County's Smaller Cities & Towns - 1990, 2000-2008

Population in Larimer County's Smaller Cities & Towns - 1990, 2000-2008

*Larimer County portion only. Windsor did not include land in Larimer County until the mid 1990s.

Data Source:

See data table

What these data tell us:

From 1990 to 2000, Larimer County's population grew at a faster rate (35.1%) than that of Colorado (30.6%). Relative to the other nine most populated Colorado counties, the increase was most similar to Adams, Arapahoe, Boulder, El Paso and Weld counties. Denver, Jefferson, and Pueblo counties had much smaller increases than Larimer County (15% to 20%). Larimer County continued to rank as the seventh most populous county in Colorado, according to the 2000 Census. See the data table for more information on population growth in Colorado's largest counties.

From 1990 to 2000, both Fort Collins and Loveland experienced an approximate 35% increase in population. The two other largest Colorado cities with a similar increase were Westminster and Longmont. See the data table for more information on population increases in Colorado's largest cities.

Following the 2000 Census, population growth in Estes Park (16%), Fort Collins (15%), and Larimer County (16%) was slightly lower than Colorado's 17% increase between 2000 and 2008. The largest population increases for the same period occurred in Loveland (28%), Timnath (102%), Wellington (110%), and the Larimer County part of Windsor (813%).

Note: Percentage increases can be misleading when applied to smaller populations. In looking at Larimer County's smaller cities and towns, small increases in numbers of residents may translate into large gains in percentage of population increases.

Additional Information:

On Compass -

Outside Compass -

Standards or Targets: N/A

Data Tables:

Population of Larimer County, 1990-2008

1990 Census

186,136

1991

193,542

1992

199,666

1993

206,844

1994

214,936

1995

221,622

1996

227,248

1997

232,796

1998

239,080

1999

246,156

2000 Census

251,494

2001

261,208

2002

266,789

2003

269,061

2004

273,883

2005

276,755

2006

282,052

2007

288,244

2008

291,906

See chart

Estimated Population of Larimer County, 2009- 2018

2009

300,122

2010

306,176

2011

312,256

2012

318,822

2013

325,387

2014

331,970

2015

338,548

2016

345,129

2017

352,213

2018

359,300

See chart

Population Counts & Percentage Change in Colorado, Larimer County - 1990, 2000-2008

1990 Census

2000 Census

% Change 1990 - 2000

2008

% Change 2000 - 2008

COLORADO

3,294,394

4,301,261

30.6%

5,010,395

16.5%

Larimer County

186,136

251,494

35.1%

291,906

16.1%

Berthoud

2,990

4,839

61.8%

5,249

8.5%

Estes Park

3,184

5,413

70.0%

6,282

16.1%

Fort Collins

87,758

118,652

35.2%

135,843

14.5%

Loveland

37,352

50,608

35.5%

64,858

28.2%

Timnath

190

223

17.4%

451

102.2%

Wellington

1,340

2,672

99.4%

5,617

110.2%

Windsor (Larimer)

N/A

284

N/A

2,593

813.0%

Unincorporated Larimer County

53,322

68,819

29.1%

70,721

2.8%

See chart - Percentage Change

See chart - Largest Cities & Unincorporated

See chart - Smaller Cities & Towns

Population Increase in Larimer County & Ten Largest Other Colorado Counties

Population Rank

Geographic Area

Population

Population Increase

1990 to 2000

1990

2000

1990

2000

Number Increase

Percent Increase

Colorado

3,294,394

4,301,261

1,006,867

31%

1

1

Denver County

467,610

554,636

87,026

19%

2

2

Jefferson County

438,430

527,056

88,626

20%

3

3

El Paso County

397,014

516,929

119,915

30%

4

4

Arapahoe County

391,511

487,967

96,456

25%

5

5

Adams County

265,038

363,857

98,819

37%

6

6

Boulder County

225,339

291,288

65,949

29%

7

7

Larimer County

186,136

251,494

65,358

35%

8

8

Weld County

131,821

180,936

49,115

37%

11

9

Douglas County

60,391

175,766

115,375

191%

9

10

Pueblo County

123,051

141,472

18,421

15%

10

11

Mesa County

93,145

116,255

23,110

25%

Back to 'What these data tell us'

Population Increase in Colorado's Largest Cities

Population Rank

City

Population

Population Increase, 1990 to 2000

1990

2000

1990

2000

Number Increase

Percent Increase

1

1

Denver

467,610

554,636

87,026

19%

2

2

Colorado Springs

281,140

360,890

79,750

28%

3

3

Aurora

222,103

276,393

54,290

24%

4

4

Lakewood

126,481

144,126

17,645

14%

7

5

Fort Collins

87,758

118,652

30,894

35%

6

6

Arvada

89,235

102,153

12,918

15%

5

7

Pueblo

98,640

102,121

3,481

4%

9

8

Westminster

74,625

100,940

26,315

35%

8

9

Boulder

83,312

94,673

11,361

14%

11

10

Thornton

55,031

82,384

27,353

50%

10

11

Greeley

60,536

76,930

16,394

27%

12

12

Longmont

51,555

71,093

19,538

38%

13

13

Loveland

37,352

50,608

13,256

35%

17

14

Grand Junction

29,034

41,986

12,952

45%

14

15

Littleton

33,685

40,340

6,655

20%

Back to 'What these data tell us'