Residential delivery area · Colorado
ZIP Code 81154: South Fork, CO
ZIP code 81154 uses the postal name South Fork, Colorado and lies mostly in Rio Grande County (65% of its land) with the rest in Mineral County (Census 2020 ZIP-county file). About 1,400 people live there (Census Bureau, ACS 2020-2024). Median household income is $77,177 (Census Bureau, ACS 2020-2024). By Census place, its land lies in South Fork (under 1%), Alpine (under 1%) and Gerrard (under 1%); 99% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2022
- ZBP2023
- IRS2022
- Town
- South Fork · its only residential ZIP
- County
- Rio Grande County (65%); Mineral County (35%)
- Census places
- South Fork (under 1%); Alpine (under 1%) census-designated place; Gerrard (under 1%) census-designated place
- House district
- CO-3 119th Congress
- State
- Colorado
- Time zone
- Mountain
- Land area
- 375.0 sq mi · 4 people per sq mi
Where is ZIP code 81154?
81154 centers on 37.634°, -106.668° and covers 375.0 square miles of land plus 0.2 of water. It borders 5 ZIP codes: 81132, 81130, 81147, 81120, 81230.
The map draws ZIP code areas only. For the streets inside 81154, 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 81154 compare with the rest of Rio Grande County?
| Measure | 81154 | In Rio Grande County | In CO |
|---|---|---|---|
| People (ACS 2020-2024) | 1,363 | 4th of 4 | 311th of 527 |
| Median household income | $77k | not ranked | not ranked |
| Median home value | $511k | 1st of 3 | 151st of 311 |
81154's median household income is not ranked: its 90% margin of error (±$25,828) is more than a quarter of the figure ($77,177). 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 9% 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 81154?
The 2020 Census counted 1,302 people in 81154; the ACS, which samples households over 2020-2024, estimates 1,363. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 1,363±330 (90% margin)
- 2020 Census count
- 1,302
- Households
- 704
- Median age
- 52.7
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 81154?
Of the 1,363 people the ACS estimates in 81154, 13.3% are under 18 and 33.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (91.9%).
- Under 1813.3%
- 18 to 6452.9%
- 65 and older33.8%
- White, not Hispanic91.9%
- Hispanic or Latino6.5%
- Other or two or more1.4%
- Black, not Hispanic0.2%
- Asian, not Hispanic0.1%
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 81154 earn?
Median household income is $77,177 (ACS 2020-2024).
- Median household income
- $77,177±$25,828
- Income per person
- $48,441
- Below the poverty line
- 7.1%
- Unemployed (of the labor force)
- 1.7%
- Adults 25+ with a bachelor's degree
- 48.2%
- Adjusted gross income per tax return, 2022
- $82,134650 returns; wages 45% of AGI (IRS)
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 81154?
- Median home value (owners' estimate)
- $511,300
- Median gross rent
- $935
- Homes owned by their occupants
- 71.0%
- Housing units
- 1,959
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 81154?
79 business establishments had a location in this ZIP code in 2023, 13 more than in 2018; the most are in accommodation and food services (ZIP Code Business Patterns).
- Accommodation and food services24
- Retail trade13
- Construction10
- Real estate and rental and leasing8
- Administrative and support and waste management and remediation services6
- Professional, scientific, and technical services4
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 81154?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 81132 | Del Norte | 3,252 | $55k | 14.8 mi |
| 81130 | Creede | 727 | $55k | 23.9 mi |
| 81147 | Pagosa Springs | 13,091 | $84k | 33.2 mi |
| 81120 | Antonito | 1,832 | $48k | 35.0 mi |
| 81230 | Gunnison | 10,971 | $78k | 54.8 mi |
| 81144 | Monte Vista | 6,543 | $65k | 29.5 mi (near) |
| 81125 | Center | 3,362 | $56k | 35.1 mi (near) |
| 81140 | La Jara | 1,893 | $47k | 36.2 mi (near) |
| 81149 | Saguache | 1,183 | $57k | 36.7 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.