• county
  • FIPS 08123
  • Largest town: Greeley

Weld County, Colorado

Weld County had 369,745 residents in the Census Vintage 2024 estimate, on 3,985.0 square miles of land. It ranks 8th of 64 in Colorado by population and 3rd by land area.

Population
369,745
#8 of 64 in Colorado · #208 in US
Area
3,985.0 sq mi
#3 of 64 in Colorado · #122 in US
Density
93 / sq mi
#10 of 64 in Colorado · #966 in US
Median household income
$90,675
#21 of 64 in Colorado · #235 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Weld County within Colorado. Pin: Denver.

Measure from here

Tools and pages that start from Weld County

Weld County population, land area and income

Weld County had 369,745 residents in the Census Vintage 2024 estimate, on 3,985.0 square miles of land. It ranks 8th of 64 in Colorado by population and 3rd by land area. That works out to 92.8 people per square mile, near the US average of 96.3, and above the national county median.

The median county-equivalent in Colorado has 15,336 residents, so Weld County is 24.1 times that size.

Its SAIPE 2023 median household income of $90,675 is in the top tenth among 3,143 counties with an estimate.

National rank among 3,144

Population

369,745

3144th1st

208th of 3,144 (US)

Land area

3,985 sq mi

3144th1st

122nd of 3,144 (US)

Density

92.8 / sq mi

3144th1st

966th of 3,144 (US)

Median household income

$90,675

3143rd1st

235th of 3,143 (US)

Rank within Colorado (64)

Population

369,745

64th1st

8th of 64 (CO)

Land area

3,985 sq mi

64th1st

3rd of 64 (CO)

Density

92.8 / sq mi

64th1st

10th of 64 (CO)

Median household income

$90,675

64th1st

21st of 64 (CO)

How Weld County's population changed since 2020

Weld County gained 38,278 residents between the July 2020 and July 2024 estimates, a rise of 11.5%. That ranks 4th of 64 in Colorado for growth. The median Colorado county changed by +1.7%, and the state as a whole by +2.9%.

Since the April 2020 estimates base, Weld County recorded 19,737 births and 10,066 deaths, a natural change of +9,671. Net international migration added +3,207 and net domestic migration, people moving to or from other US counties, came to +27,650. The largest single component was domestic migration, which added 27,650 people.

331.5k2020339.9k2021350.6k2022360.2k2023369.7k2024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
19,737
Deaths
10,066
Net international migration
+3,207
Net domestic migration
+27,650
Change, July 2023 to July 2024
+9,529

Where Weld County is

The Census internal point of Weld County is at 40.556000, -104.383700. It sits in UTM zone 13N. The map shades Colorado's 64 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Weld County outlined. Dots are towns of 1,000+ people with residents in it.

Otero County: -3.6%Lake County: -0.6%Adams County: +4.3%Kit Carson County: +0.2%Phillips County: -0.9%Bent County: +5.5%Lincoln County: -1.1%Washington County: -0.9%Hinsdale County: -5.1%Alamosa County: +1.9%Kiowa County: -4.1%Arapahoe County: +1.8%Archuleta County: +5.1%Montrose County: +4.6%Jefferson County: -0.8%Gilpin County: +2.5%Larimer County: +4.1%Custer County: +17.5%Saguache County: +4.3%Mineral County: +7.1%Broomfield County: +5.1%Logan County: -2.1%Mesa County: +3.4%Eagle County: -2.4%Denver County: +1.6%Pitkin County: -4.2%Boulder County: -0.2%El Paso County: +2.6%Las Animas County: +0.1%San Miguel County: -2.9%Douglas County: +9.3%Cheyenne County: -1.9%Garfield County: +2.2%Ouray County: +6.5%San Juan County: +16.0%Yuma County: +0.8%Elbert County: +12.1%Prowers County: -0.5%Morgan County: +4.2%Delta County: +3.7%Chaffee County: +6.6%Huerfano County: +2.4%Teller County: +0.5%Costilla County: +5.3%Baca County: -3.3%Routt County: +1.6%Conejos County: +1.3%Summit County: -1.1%Clear Creek County: -3.0%Fremont County: +2.5%Rio Blanco County: +1.3%Dolores County: +5.8%Grand County: +2.6%Gunnison County: +2.1%Park County: +5.1%Sedgwick County: -5.5%Montezuma County: +3.7%La Plata County: +2.1%Moffat County: -1.0%Rio Grande County: -3.6%Weld County: +11.5%Pueblo County: +0.9%Jackson County: -7.6%Crowley County: -1.5%
Change 2020 to 2024
  1. < -1.9%
  2. < +0.5%
  3. < +2.4%
  4. < +5.1%
  5. ≥ +5.1%
no data

Orange pin: Weld County internal point. Dark pin: Denver.

Internal point

Decimal
40.556000, -104.383700
DMS
40°33'21.60"N 104°23'1.32"W
UTM
13N 552178.2E 4489653.2N
Geohash
9xjy8wypg
Plus code
85GQHJ48+9G

Towns in Weld County

27 incorporated places of 1,000+ people have residents in Weld County, 321,119 people together, or 87% of the county. Each figure counts only the part of the town inside Weld County; towns marked "part" extend into another county. The largest is Greeley with 114,363.

  1. 01Greeley114,363
  2. 02Windsor (part)32,580
  3. 03Erie (part)23,705
  4. 04Evans22,394
  5. 05Firestone19,396
  6. 06Frederick17,937
  7. 07Johnstown (part)15,002
  8. 08Severance11,554
  9. 09Fort Lupton9,948
  10. 10Milliken9,102
  11. 11Lochbuie8,599
  12. 12Dacono6,748
  13. 13Mead6,735
  14. 14Eaton5,839
  15. 15Platteville2,904
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Weld County

The Census 2024 county adjacency file lists 8 neighbors for Weld County, including 2 across a state line. The most populous is Adams County, CO, with 542,973 residents. Distances run between Census internal points in a straight line.

Distance to Denver and the nearest big city

Denver is 64.8 miles SSW of Weld County's internal point in a straight line. The nearest place of 100,000 or more is Greeley, CO (population 114,363), 22.6 miles away.

Weld County FIPS code

The FIPS code of Weld County is 08123: state code 08 for Colorado plus county code 123. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $90,675.

Questions people ask

What is the population of Weld County, Colorado?

The Census Vintage 2024 estimate for July 1, 2024 is 369,745. That is up 38,278 people (11.5%) from the July 2020 estimate of 331,467.

What is the FIPS code of Weld County?

08123. The first two digits (08) are Colorado; the last three (123) identify the county.

What is the largest town in Weld County?

Greeley, with 114,363 residents inside Weld County in 2024.

Which counties border Weld County?

8 county-equivalents border it in the Census 2024 adjacency file: Adams County, CO; Larimer County, CO; Boulder County, CO; Laramie County, WY; Broomfield County, CO; Morgan County, CO; Logan County, CO; Kimball County, NE.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.