What city is 80021 in?

80021 is a Broomfield, CO mailing address. By land area, 48% lies inside Westminster and 34% lies inside Broomfield; the rest is outside any Census-defined city or community.

What is the population of 80021?

About 36,555 people (±1,083), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,176.

What is the median household income in 80021?

$110,038 (±$6,400), compared with $95,470 for Colorado as a whole. Half the households in the ZIP code earn more and half earn less.

How many carrier routes and mailboxes are in 80021?

24 USPS carrier routes with 19,115 residential and 1,188 business mailboxes (20,306 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.

What ZIP codes are near 80021?

The closest, measured center to center: 80005 (2.9 mi, Arvada), 80020 (3.5 mi, Broomfield), 80031 (4.1 mi, Westminster), 80007 (4.7 mi, Arvada), 80027 (4.8 mi, Louisville) and 80003 (5.2 mi, Arvada).

80021 ZIP Code, Broomfield, CO

Q: What county is 80021 in?

80021 is mostly in Jefferson County (66% of its land), with smaller parts in Broomfield County.

80021 is a ZIP code in Broomfield, Colorado — mostly in Jefferson County (66% of its land), with smaller parts in Broomfield County. It covers 17 square miles of land. The closest ZIP codes are 80005, 80020 and 80031. 36,555 people live here in 17,163 households, more than in 9 of every 10 Colorado ZIP codes. At about 2,211 people per square mile it has suburban density, and owners and renters are mixed (50% own). Median household income is $110,038, above the Colorado median of $95,470; 20% of residents moved in during the past year.

Quick facts

Mailing city: Broomfield, CO
County: Jefferson County
Land area: 17 sq mi
Population: 36,555
Median household income: $110,038
Carrier routes: 24 (19,115 homes)

Key figures

Measure	Value
Residents	36,555
Households	17,163
Median household income	$110,038
Income per person	$60,062
Median age	36.6
Homeowners	49.6%
Median home value	$568,000
Median rent	$2,117
Bachelor's degree or higher	54.8%
Average commute (minutes)	24.2
Households with kids under 18	19.7%
Moved in the past year	20.1%
Below the poverty line	5.6%
Broadband internet	97.7%
Speak a non-English language at home	11.4%

Household income

% of households	Value
<$10K	2.1%
$10–15K	1.0%
$15–25K	3.4%
$25–35K	2.8%
$35–50K	4.8%
$50–75K	13.0%
$75–100K	16.3%
$100–150K	25.0%
$150–200K	17.9%
$200K+	13.6%

Age

% of all residents	Value
<10	8.0%
10–19	7.5%
20–24	7.0%
25–34	24.6%
35–44	16.2%
45–54	10.2%
55–64	12.4%
65–74	8.9%
75+	5.2%

Tenure

% of housing units	Value
Owned, with mortgage	35.1%
Owned outright	11.7%
Rented	46.9%
Vacant	6.3%

Type of building

% of housing units	Value
Detached house	46.2%
Townhome	7.8%
2–4 units	1.4%
5–19 units	16.9%
20+ units	27.6%
Mobile / other	0.0%

Businesses in 80021

1,362 business establishments with 47,973 employees (ZIP Codes Business Patterns 2023).

Professional, Scientific, and Technical Services: 243
Retail Trade: 191
Accommodation and Food Services: 115
Health Care and Social Assistance: 106
Construction: 98
Other Services (except Public Administration): 94
Real Estate and Rental and Leasing: 91
Finance and Insurance: 87

EDDM carrier routes

80021 has 24 USPS carrier routes with 19,115 residential and 1,188 business mailboxes. Open the EDDM route map.

Carrier routes in 80021

80021 has 24 USPS carrier routes (15 city (C), 9 rural (R)) with 19,115 residential and 1,188 business mailboxes. Routes range from 397 homes (R009) to 1,850 homes (C069); the median route has 666 homes. The Census counted 17,163 households in 80021 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per route	Routes
1–249	0
250–499	2
500–749	15
750–999	3
1,000–1,499	2
1,500+	2

Best routes in 80021 for…

Most businesses

For B2B offers: office supplies, cleaning, IT, catering and commercial services.

Route C068 — USPS business mailboxes 273, 515 homes
Route R007 — USPS business mailboxes 219, 959 homes
Route R003 — USPS business mailboxes 143, 967 homes
Route R042 — USPS business mailboxes 105, 552 homes
Route C052 — USPS business mailboxes 97, 571 homes

Select these 5 routes on the route map

Every carrier route in 80021

Route	Type	Homes	Businesses	Est. median income	Est. owners	Est. families with kids	Est. moved in past year
C051	City	685	0	$123,835	—	—	—
C052	City	571	97	$80,886	—	—	—
C054	City	651	4	$104,462	—	—	—
C056	City	522	49	$91,507	—	—	—
C057	City	563	0	$104,462	—	—	—
C058	City	722	0	$112,953	—	—	—
C059	City	698	18	$114,246	—	—	—
C060	City	795	0	$113,312	—	—	—
C061	City	609	0	$148,666	—	—	—
C063	City	660	47	$136,032	—	—	—
C065	City	1,610	10	$104,306	—	—	—
C066	City	671	5	$143,432	—	—	—
C067	City	1,451	67	$91,718	—	—	—
C068	City	515	273	$88,893	—	—	—
C069	City	1,850	19	$89,435	—	—	—
R003	Rural	967	143	$127,613	—	—	—
R005	Rural	470	2	$179,927	—	—	—
R007	Rural	959	219	$136,032	—	—	—
R009	Rural	397	6	$179,927	—	—	—
R014	Rural	583	75	$127,613	—	—	—
R015	Rural	619	21	$143,841	—	—	—
R017	Rural	732	2	$127,613	—	—	—
R019	Rural	1,263	26	$88,893	—	—	—
R042	Rural	552	105	$88,893	—	—	—

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 80021 on the EDDM route map.

How route demographics are estimated

Mailbox counts come from USPS; demographics are estimates

The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).

How a route gets its figures: the block-group length-share method

We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.

Margins of error

Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.

Different years

USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.

Why some routes show identical figures

Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.

Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Nearby ZIP codes

80005 — Arvada city, CO (2.9 mi)
80020 — Broomfield city, CO (3.5 mi)
80031 — Westminster city, CO (4.1 mi)
80007 — Arvada city, CO (4.7 mi)
80027 — Louisville city, CO (4.8 mi)
80003 — Arvada city, CO (5.2 mi)
80004 — Arvada city, CO (5.3 mi)
80030 — Westminster city, CO (5.8 mi)

Areas that include 80021

Westminster, CO ZIP codes — 7 ZIP codes
Broomfield, CO ZIP codes — 4 ZIP codes
Broomfield County ZIP codes — 4 ZIP codes
Jefferson County ZIP codes — 32 ZIP codes
Colorado ZIP code data

Where it ranks

Mail every home in 80021

Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.

EDDM guides

ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 80021, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 80021 in?: 80021 is a Broomfield, CO mailing address. By land area, 48% lies inside Westminster and 34% lies inside Broomfield; the rest is outside any Census-defined city or community.
What county is 80021 in?: 80021 is mostly in Jefferson County (66% of its land), with smaller parts in Broomfield County.
What is the population of 80021?: About 36,555 people (±1,083), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 36,176.
What is the median household income in 80021?: $110,038 (±$6,400), compared with $95,470 for Colorado as a whole. Half the households in the ZIP code earn more and half earn less.
How many carrier routes and mailboxes are in 80021?: 24 USPS carrier routes with 19,115 residential and 1,188 business mailboxes (20,306 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 80021?: The closest, measured center to center: 80005 (2.9 mi, Arvada), 80020 (3.5 mi, Broomfield), 80031 (4.1 mi, Westminster), 80007 (4.7 mi, Arvada), 80027 (4.8 mi, Louisville) and 80003 (5.2 mi, Arvada).

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.