Residential delivery area · Colorado
ZIP Code 80420: Alma, CO
ZIP code 80420 uses the postal name Alma, Colorado and lies entirely in Park County (Census 2020 ZIP-county file). About 1,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $86,705 (Census Bureau, ACS 2020-2024). By Census place, 1% of its land lies in Alma; 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- Town
- Alma · its only residential ZIP
- County
- Park County
- Census places
- Alma
- Metro area
- Denver-Aurora-Centennial, CO
- House district
- CO-7 119th Congress
- State
- Colorado
- Time zone
- Mountain
- Land area
- 42.0 sq mi · 30 people per sq mi
Where is ZIP code 80420?
80420 centers on 39.324°, -106.116° and covers 42.0 square miles of land plus 0.3 of water. It borders 3 ZIP codes: 80461, 80424, 80440.
The map draws ZIP code areas only. For the streets inside 80420, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 80420 compare with the rest of Park County?
| Measure | 80420 | In Park County | In CO |
|---|---|---|---|
| People (ACS 2020-2024) | 1,246 | 5th of 12 | 316th of 527 |
| Median household income | $87k | not ranked | not ranked |
| Median home value | $616k | 2nd of 5 | 99th of 311 |
80420's median household income is not ranked: its 90% margin of error (±$45,287) is more than a quarter of the figure ($86,705). Rankings use ZIP codes of 1,000 or more people living in households, with margins at most 25% of the figure.
It is denser than 33% of U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 80420?
The 2020 Census counted 927 people in 80420; the ACS, which samples households over 2020-2024, estimates 1,246. Between the 2010 and 2020 censuses its population fell 0.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 1,246±408 (90% margin)
- 2020 Census count
- 927−0.6% since 2010 (933)
- Households
- 741
- Median age
- 57.2
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 80420?
Of the 1,246 people the ACS estimates in 80420, 4.7% are under 18 and 19.0% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (89.6%).
- Under 184.7%
- 18 to 6476.3%
- 65 and older19.0%
- White, not Hispanic89.6%
- Hispanic or Latino8.3%
- Black, not Hispanic2.1%
- Asian, not Hispanic0.0%
- Other or two or more0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 80420 earn?
Median household income is $86,705 (ACS 2020-2024). It is not measurably different from 2015-2019 ($55,010 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $86,705±$45,287
- Income per person
- $68,745
- Below the poverty line
- 8.3%
- Unemployed (of the labor force)
- 0.1%
- Adults 25+ with a bachelor's degree
- 68.9%
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 80420?
FHFA's house price index for 80420, built from repeat sales and appraisals of the same homes, rose 145% from 2015 to 2025 and rose 65% from 2020 to 2025, and moved −8.7% in 2025.
- Median home value (owners' estimate)
- $616,000
- Median gross rent
- $2,295
- Homes owned by their occupants
- 59.8%
- Housing units
- 1,161
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 80420?
60 business establishments had a location in this ZIP code in 2023, 18 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction19
- Professional, scientific, and technical services9
- Accommodation and food services8
- Administrative and support and waste management and remediation services7
- Retail trade6
- Real estate and rental and leasing4
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 80420?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 80461 | Leadville | 6,957 | $96k | 10.8 mi |
| 80424 | Breckenridge | 9,764 | $121k | 11.9 mi |
| 80440 | Fairplay | 3,502 | $116k | 13.7 mi |
| 80443 | Frisco | 3,992 | $109k | 12.7 mi (near) |
| 81649 | Red Cliff | 345 | – | 14.5 mi (near) |
| 80432 | Como | 293 | $45k | 16.3 mi (near) |
| 80448 | Grant | 0 | – | 18.4 mi (near) |
| 80435 | Dillon | 8,715 | $98k | 19.8 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.