Index: Demographics / Subcategory: Demographics

Population Size & Growth

Date updated: 06/19/2013

The population data are based on United States Census information from 1990, 2000 and 2010, and on estimates from the Colorado Department of Local Affairs (DOLA), and the Larimer County Planning Department.

Population estimates for Larimer County are available from the United States Census Bureau and the Colorado State Demography Office. The estimates vary, with the state's estimates being slightly higher than the Census Bureau's estimates. Information on methodologies is available from the United States Census Bureau and the Colorado State Demography Office.

What this chart shows: Population of Larimer County, 2000 - 2012

Data Source: U.S. Census Bureau, (2000 to 2009) and (2010 to 2012)

See data table

What this chart shows: Estimated Population Growth in Larimer County, 2013 - 2030

Data Source: Colorado Department of Local Affairs (DOLA)

See data table

What the above data tell us:

Larimer County's population grew just over 19% between the 2000 Census and the 2010 Census, and 15.6% over the last decade.

Colorado's State Demography Office estimates the annual population will increase each year by 1.4% to 2.0% through 2030.

What this table shows: Total Estimated Population in Larimer County Communities, 2003-2012

Total Estimated Population in Larimer County Communities

 

2003

2004

2005

2006

2007

2008

2009

2010

2011

2012

Berthoud* 4,999 4,999 4,988 5,085 5,186 5,249 5,281 5,320 5,351 5,397
Estes Park 5,651 5,808 5,821 6,021 6,165 6,282 6,404 6,458 6,505 6,534
Fort Collins 127,155 129,151 129,951 131,711 134,169 135,843 137,503 139,587 140,158 141,841
Johnstown* 65 65 65 81 89 292 401 523 718 916
Loveland 57,355 59,198 60,407 62,114 64,166 64,858 65,442 65,614 67,330 67,786
Timnath 229 229 227 228 231 451 609 718 876 1,226
Wellington 3,365 3,784 4,478 5,126 5,445 5,617 5,703 5,737 5,797 5,852
Windsor* 1,183 1,446 1,968 2,360 2,373 2,593 2,688 2,741 2,838 2,989

*Larimer County portion only

Data Source: Larimer County Planning Department (data not available online)

What the above data tell us:

The smaller communities of Johnston, Timnath, Wellington and Windsor saw the largest percentage increases in population between 2003 and 2012. In comparison, growth in Berthoud, Estes Park, and Fort Collins was smaller than for Larimer County as a whole.

In 2010, Larimer County became the sixth most populous county in the state. See the data table for more information on population growth in Colorado's largest counties since 1990.

According to the 2010 Census, Fort Collins is now the fourth largest city in Colorado. See the data table for more information on population increases in Colorado's largest cities since 1990.

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.

What this chart shows: Components of Population Change in Larimer County, 1980 - 2039

Data Source: Colorado Department of Local Affairs (DOLA)

See data table

What the above data tell us:

Net migration (difference between residents moving into and out of the county) has accounted for two thirds (66.7%) of the population increase in Larimer County between 1980 and 2009 and is estimated to account for 78.3% between 2010 and 2039.

The Colorado State Demography Office estimates that net migration will continue to provide the large majority of population growth in Colorado through 2040.

Additional Information:

Related Information on COMPASS -

Other Resources -

Industry Standards or Targets:

N/A

Data Tables:

Estimated Population of Larimer County

2000 Census

251,494

2001

260,746

2002

265,659

2003

268,671

2004

271,830

2005

275,477

2006

281,215

2007

286,927

2008

292,889

2009

298,382

2010 Census

299,630

2011

305,091

2012

310,487

See chart

Estimated Population of Larimer County

Year

Estimated Population

Year

Estimated Population

2013

316,031

2022

374,405

2014

322,092

2023

381,078

2015

328,236

2024

387,688

2016

334,749

2025

394,236

2017

341,232

2026

400,680

2018

347,699

2027

406,800

2019

354,152

2028

412,875

2020

360,813

2029

418,884

2021

367,661

2030

424,833

See chart

Population Increase in Colorado's Largest Counties

Population Rank

County

Population

Population Increase

1990

2000

2010

1990 Census

2000 Census

2010 Census

Increase

1990 to 2000

Increase

2000 to 2010

3 3 1 El Paso 397,014 516,929 622,263

30%

20%

1 1 2 Denver 467,610 554,636 600,158

19%

8%

4 4 3 Arapahoe 391,511 487,967 572,003

25%

17%

2 2 4 Jefferson 438,430 527,056 534,543

20%

1%

5 5 5 Adams 265,038 363,857 441,603

37%

21%

7 7 6

Larimer

186,136 251,494 299,630

35%

19%

6 6 7 Boulder 225,339 291,288 294,567

29%

1%

11 9 8 Douglas 60,391 175,766 285,465

191%

62%

8 8 9 Weld 131,821 180,936 252,825

37%

40%

9 10 10 Pueblo 123,051 141,472 159,063

15%

12%

Back to 'What the above data tell us'

Population Increase in Colorado's Largest Cities

Population Rank

City

Population

Population Increase

1990

2000

2010

1990 Census

2000 Census

2010 Census

Increase

1990 to 2000

Increase

2000 to 2010

1 1 1 Denver 467,610 554,636 600,158

19%

8%

2 2 2 Colorado Springs 281,140 360,890 416,427

28%

15%

3 3 3 Aurora 222,103 276,393 325,078

24%

18%

7 5 4

Fort Collins

87,758 118,652 143,986

35%

21%

4 4 5 Lakewood 126,481 144,126 142,980

14%

-1%

11 10 6 Thornton 55,031 82,384 118,772

50%

44%

5 7 7 Pueblo 98,640 102,121 106,595

4%

4%

6 6 8 Arvada 89,235 102,153 106,433

15%

4%

9 8 9 Westminster 74,625 100,940 106,114

35%

5%

---

---

10 Centennial

---

---

100,377

---

---

8 9 11 Boulder 83,312 94,673 97,385

14%

3%

---

13 12 Highlands Ranch 10,181 70,931 96,713

597%

36%

10 11 13 Greeley 60,536 76,930 92,889

27%

21%

12 12 14 Longmont 51,555 71,093 86,270

38%

21%

13 14 15

Loveland

37,352 50,608 66,859

35%

32%

Back to 'What the above data tell us'

Components of Population Change in Larimer County

 

Natural Increase

Net Migration

#

%

#

%

1980-84

8,344

39.8%

12,625

60.2%

1985-89

8,635

50.5%

8,463

49.5%

1990-94

8,069

26.9%

21,932

73.1%

1995-99

7,646

24.5%

23,582

75.5%

2000-04

8,948

33.0%

18,163

67.0%

2005-09

8,587

35.4%

15,646

64.6%

2010-14

7,701

31.3%

16,889

68.7%

2015-19

8,184

25.5%

23,875

74.5%

2020-24

7,518

22.4%

26,018

77.6%

2025-29

6,575

21.1%

24,621

78.9%

2030-34

5,156

17.7%

23,928

82.3%

2035-39

3,485

12.6%

24,072

87.4%

See chart