Colorado · Census place 0883835
Westminster, Colorado
Westminster is a city in 2 counties of Colorado with an estimated 115,302 residents on July 1, 2024. It is the 8th largest of 149 incorporated places of 1,000+ people in the state.
- Population 2024
- 115,302
- #8 of 149 in Colorado
- Change since 2020
- -1.2%
- -1,351 people
- Land area
- 31.6 sq mi
- + 2.31 sq mi water
- Density
- 3,646 / sq mi
- State median 1,848
Measure from here
Tools and pages that start from Westminster
Westminster population, 2020 to 2024
Westminster lost 1,351 residents from July 2020 to July 2024, a change of -1.2%. In the latest year it moved by -32. Among 79 Colorado places of 5,000 or more, that growth ranks 60th; the median place changed by +3.0%. The median place of 5,000+ in Colorado has 14,061 people, so Westminster is 8.2 times that size.
Westminster covers 31.62 square miles of land and 2.31 of water, for 3,646 people per square mile of land. The median Colorado place of 5,000+ has 1,848, so Westminster is denser than the typical town.
The 2 counties Westminster spans
Westminster crosses county lines. The Census county-part estimates split its 115,302 residents as follows; Adams County holds 60.3% of them. The shaded shapes are on the map above; dots mark the eight nearest places.
- 01Adams County69,508
- 02Jefferson County45,794
ZIP codes in Westminster
7 ZIP Code Tabulation Areas (ZCTAs) overlap Westminster by at least 10% of the ZCTA's or the city's land: 80003, 80005, 80020, 80021, 80030, 80031, 80234. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.
Where Westminster is
The Census internal point of Westminster is at 39.880100, -105.061500. Denver, the capital, is 10.6 miles SSE in a straight line. The nearest larger place is Arvada, CO (121,873 people), 5.7 miles away. The ground at the internal point is about 1,627 m (5,338 ft) above sea level.
Internal point
- Decimal
- 39.880100, -105.061500
- DMS
- 39°52'48.36"N 105°03'41.40"W
- UTM
- 13N 494741.2E 4414451.4N
- Geohash
- 9xj6c7bw3
- Plus code
- 85FPVWJQ+29
- Time zone
- America/Denver
Daylight in Westminster
At 39.88° N, Westminster gets about 15 h 00 min of daylight around the June solstice and 9 h 20 min around the December solstice, a swing of 5 h 40 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026. Month-by-month sunrise and sunset times are on the Westminster daylight page.
Places near Westminster
The eight nearest incorporated places of 1,000+ in Colorado, measured between internal points. The closest is Federal Heights, 2.7 miles away, with 13,971 people.
Questions people ask
What is the population of Westminster, CO?
115,302 on July 1, 2024, in the Census Vintage 2024 estimates. That is down 1,351 (1.2%) from 116,653 in July 2020.
What county is Westminster in?
It spans 2 counties: Adams County (69,508 residents), Jefferson County (45,794 residents).
What ZIP codes cover Westminster?
7 ZIP Code Tabulation Areas overlap it by at least 10% of either area: 80003, 80005, 80020, 80021, 80030, 80031, 80234.
How far is Westminster from Denver?
10.6 miles (17.0 km) in a straight line, heading SSE from Westminster.
What is the nearest larger city to Westminster?
Arvada, CO, with 121,873 residents, 5.7 miles away between internal points.
Sources and data as of
Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.
- 01Census Vintage 2024 subcounty population estimates
- 02Census 2024 Gazetteer, places
- 03Census 2020 ZCTA to place relationship file
- 04Census 2024 cartographic boundary file, counties (1:5,000,000)
- 05Open-Meteo forecast API (time zone and Copernicus GLO-90 elevation) (last verified 2026-09-30)
How every number is computed: methodology. Spotted a wrong figure? Report an error.