80501 ZIP Code, Longmont, CO

80501 is a ZIP code in Longmont, Colorado in Boulder County. It covers 13 square miles of land. The closest ZIP codes are 80504, 80544 and 80503. 44,147 people live here in 18,945 households, more than in 9 of every 10 Colorado ZIP codes. At about 3,500 people per square mile it has suburban density, and owners and renters are mixed (59% own). Median household income is $80,911, below the Colorado median of $95,470.

Quick facts

Key figures

MeasureValue
Residents44,147
Households18,945
Median household income$80,911
Income per person$42,310
Median age38.4
Homeowners58.5%
Median home value$488,800
Median rent$1,662
Bachelor's degree or higher40.3%
Average commute (minutes)24.3
Households with kids under 1825.0%
Moved in the past year18.3%
Below the poverty line11.1%
Broadband internet93.5%
Speak a non-English language at home23.3%

Household income

% of householdsValue
<$10K5.9%
$10–15K2.6%
$15–25K7.1%
$25–35K5.9%
$35–50K8.7%
$50–75K16.7%
$75–100K14.8%
$100–150K20.9%
$150–200K8.6%
$200K+8.7%

Age

% of all residentsValue
<1011.2%
10–1910.9%
20–246.0%
25–3415.9%
35–4414.8%
45–5411.7%
55–6411.6%
65–7410.2%
75+7.5%

Tenure

% of housing unitsValue
Owned, with mortgage40.1%
Owned outright16.3%
Rented39.6%
Vacant4.1%

Type of building

% of housing unitsValue
Detached house54.8%
Townhome9.0%
2–4 units7.4%
5–19 units10.8%
20+ units12.6%
Mobile / other5.4%

Businesses in 80501

1,955 business establishments with 26,371 employees (ZIP Codes Business Patterns 2023).

EDDM carrier routes

80501 has 37 USPS carrier routes with 19,651 residential and 2,254 business mailboxes. Open the EDDM route map.

Carrier routes in 80501

80501 has 37 USPS carrier routes (34 city (C), 3 rural (R)) with 19,651 residential and 2,254 business mailboxes. Routes range from 98 homes (C099) to 957 homes (R042); the median route has 504 homes. The Census counted 18,945 households in 80501 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.

Homes per routeRoutes
1–2492
250–49916
500–74915
750–9994
1,000–1,4990
1,500+0

Best routes in 80501 for…

Most businesses

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

  1. Route C078 — USPS business mailboxes 369, 235 homes
  2. Route C053 — USPS business mailboxes 235, 485 homes
  3. Route C087 — USPS business mailboxes 234, 422 homes
  4. Route C051 — USPS business mailboxes 157, 705 homes
  5. Route C096 — USPS business mailboxes 151, 294 homes

Select these 5 routes on the route map

Every carrier route in 80501

RouteTypeHomesBusinessesEst. median incomeEst. ownersEst. families with kidsEst. moved in past year
C048City50482$109,808———
C051City705157$94,830———
C052City4172$85,006———
C053City485235$76,251———
C054City67413$64,480———
C055City4310$141,648———
C057City418110$40,808———
C058City53343$84,601———
C060City45650$72,750———
C061City45676$89,064———
C064City5972$76,251———
C066City4100$85,006———
C067City60524$69,970———
C068City71030$192,465———
C071City6605$58,702———
C073City521144$200,001+———
C074City95798$58,702———
C077City55983$78,628———
C078City235369$76,251———
C082City54360$78,628———
C083City5333$85,006———
C084City9151$109,130———
C087City422234$200,001+———
C088City4801$109,130———
C089City5062$76,826———
C090City4549$90,448———
C091City6110$108,560———
C092City47531$76,251———
C094City4341$88,116———
C096City294151$90,448———
C099City980$90,936———
C100City47776$91,031———
C101City5611$40,808———
C102City4667$57,147———
R030Rural8194$115,196———
R042Rural95717$97,958———
R057Rural273133$115,196———

Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 80501 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

Areas that include 80501

Mail every home in 80501

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) 80501, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.

Frequently asked questions

What city is 80501 in?
80501 is a Longmont, CO mailing address. By land area, 84% lies inside Longmont; the rest is outside any Census-defined city or community.
What county is 80501 in?
80501 is in Boulder County.
What is the population of 80501?
About 44,147 people (±1,382), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 42,822.
What is the median household income in 80501?
$80,911 (±$5,220), 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 80501?
37 USPS carrier routes with 19,651 residential and 2,254 business mailboxes (21,940 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
What ZIP codes are near 80501?
The closest, measured center to center: 80504 (3.8 mi, Firestone), 80544 (5.6 mi, Niwot), 80503 (5.7 mi, Longmont), 80542 (7.2 mi, Mead), 80516 (8.8 mi, Erie) and 80513 (9.3 mi, Berthoud).

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