# Somerset County, Pennsylvania demographics

Canonical: https://olympus.new-odyssey.com/data/county/42111

Somerset County, Pennsylvania (county FIPS 42111) has a median household income of $61,446 (±$1,812) and a total population of 72,799 in the American Community Survey 5-year estimates for 2020-2024.

Margins of error are at the 90% confidence level. The figures describe 2020-2024 (dollars in 2024 dollars), not the present. 41 ZIP Code Tabulation Areas overlap the county (Census 2020).

Notes:

- Values are ACS 5-year estimates for 2020-2024 (dollars in 2024 dollars), not current figures.
- ZCTA-county overlaps come from the Census 2020 relationship file and use 2020 counties, by land area; Connecticut uses its legacy counties, not the planning regions in ACS 2022+.

## ACS 5-year estimates, 2020-2024

Census American Community Survey 5-year estimates for 2020-2024, with 90% margins of error as published by the Census Bureau.

| Metric | Estimate | Margin of error (90%) | ACS table |
| --- | --- | --- | --- |
| Total population | 72,799 | none (controlled estimate) | B01003 |
| Median age | 46.9 years | ±0.4 years | B01002 |
| Households | 29,344 | ±423 | B11001 |
| Median household income (inflation-adjusted to the final ACS year) | $61,446 | ±$1,812 | B19013 |
| Median value of owner-occupied housing units | $150,600 | ±$5,309 | B25077 |
| Median gross rent | $753 | ±$35 | B25064 |
| Owner-occupied share of occupied housing units | 80.4% | none (derived from several estimates) | B25003 (derived) |
| Renter-occupied share of occupied housing units | 19.6% | none (derived from several estimates) | B25003 (derived) |
| High school graduate or higher (age 25+) | 90.9% | none (derived from several estimates) | B15003 (derived) |
| Bachelor's degree or higher (age 25+) | 17.9% | none (derived from several estimates) | B15003 (derived) |
| Share of people below the poverty level | 11% | none (derived from several estimates) | B17001 (derived) |
| Unemployment rate (civilian labor force) | 4.9% | none (derived from several estimates) | B23025 (derived) |

- Dollar values are in 2024 inflation-adjusted dollars.
- Percentages' margins of error are in percentage points (pp).

## Geography

| Measure | Value |
| --- | --- |
| County FIPS | 42111 |
| Land area | 1,075.05 sq mi |
| Water area | 6.6 sq mi |
| Population density | 68 per sq mi of land |
| Geography vintage | 2024 Gazetteer |

## ZIP codes (ZCTAs) in this county

ZCTAs that overlap the county in the Census 2020 ZCTA to county relationship file, largest share of the county's land first.

| ZCTA | Share of county land | Share of ZCTA land | County is the ZCTA's primary county |
| --- | --- | --- | --- |
| [15501](https://olympus.new-odyssey.com/data/zip/15501) | 11.7% | 95.4% | Yes |
| [15552](https://olympus.new-odyssey.com/data/zip/15552) | 9.5% | 100% | Yes |
| [15557](https://olympus.new-odyssey.com/data/zip/15557) | 8.3% | 99.2% | Yes |
| [15530](https://olympus.new-odyssey.com/data/zip/15530) | 8.1% | 100% | Yes |
| [15538](https://olympus.new-odyssey.com/data/zip/15538) | 6.3% | 100% | Yes |
| [15963](https://olympus.new-odyssey.com/data/zip/15963) | 6.2% | 74.3% | Yes |
| [15563](https://olympus.new-odyssey.com/data/zip/15563) | 5.1% | 100% | Yes |
| [15424](https://olympus.new-odyssey.com/data/zip/15424) | 5% | 75.2% | Yes |
| [15531](https://olympus.new-odyssey.com/data/zip/15531) | 5% | 87.4% | Yes |
| [15540](https://olympus.new-odyssey.com/data/zip/15540) | 4% | 100% | Yes |
| [15541](https://olympus.new-odyssey.com/data/zip/15541) | 3.5% | 100% | Yes |
| [15542](https://olympus.new-odyssey.com/data/zip/15542) | 3.4% | 100% | Yes |
| [15558](https://olympus.new-odyssey.com/data/zip/15558) | 3.1% | 100% | Yes |
| [15926](https://olympus.new-odyssey.com/data/zip/15926) | 2.9% | 100% | Yes |
| [15924](https://olympus.new-odyssey.com/data/zip/15924) | 2.5% | 100% | Yes |
| [15936](https://olympus.new-odyssey.com/data/zip/15936) | 2.4% | 100% | Yes |
| [15551](https://olympus.new-odyssey.com/data/zip/15551) | 2.3% | 100% | Yes |
| [15935](https://olympus.new-odyssey.com/data/zip/15935) | 2.1% | 100% | Yes |
| [15545](https://olympus.new-odyssey.com/data/zip/15545) | 1.9% | 41.8% |  |
| [15411](https://olympus.new-odyssey.com/data/zip/15411) | 1.7% | 100% | Yes |
| [15905](https://olympus.new-odyssey.com/data/zip/15905) | 1.6% | 41.1% |  |
| [15622](https://olympus.new-odyssey.com/data/zip/15622) | 1.2% | 34.7% |  |
| [15928](https://olympus.new-odyssey.com/data/zip/15928) | 0.6% | 100% | Yes |
| [15502](https://olympus.new-odyssey.com/data/zip/15502) | 0.4% | 100% | Yes |
| [15562](https://olympus.new-odyssey.com/data/zip/15562) | 0.3% | 100% | Yes |
| [15937](https://olympus.new-odyssey.com/data/zip/15937) | 0.2% | 100% | Yes |
| [15953](https://olympus.new-odyssey.com/data/zip/15953) | 0.1% | 100% | Yes |
| [15546](https://olympus.new-odyssey.com/data/zip/15546) | 0.1% | 100% | Yes |
| [15565](https://olympus.new-odyssey.com/data/zip/15565) | 0.1% | 100% | Yes |
| [15532](https://olympus.new-odyssey.com/data/zip/15532) | 0.1% | 100% | Yes |
| [15547](https://olympus.new-odyssey.com/data/zip/15547) | 0.1% | 100% | Yes |
| [15520](https://olympus.new-odyssey.com/data/zip/15520) | 0.1% | 100% | Yes |
| [15564](https://olympus.new-odyssey.com/data/zip/15564) | 0.1% | 100% | Yes |
| [15544](https://olympus.new-odyssey.com/data/zip/15544) | 0% | 100% | Yes |
| [15534](https://olympus.new-odyssey.com/data/zip/15534) | 0% | 0.9% |  |
| [15555](https://olympus.new-odyssey.com/data/zip/15555) | 0% | 100% | Yes |
| [15561](https://olympus.new-odyssey.com/data/zip/15561) | 0% | 100% | Yes |
| [15510](https://olympus.new-odyssey.com/data/zip/15510) | 0% | 100% | Yes |
| [15560](https://olympus.new-odyssey.com/data/zip/15560) | 0% | 100% | Yes |
| [15559](https://olympus.new-odyssey.com/data/zip/15559) | 0% | 0.1% |  |
| [15904](https://olympus.new-odyssey.com/data/zip/15904) | 0% | 0% |  |

## Sources

- American Community Survey 5-year estimates (Census Data API) (U.S. Census Bureau), ACS 5-year 2020-2024 (release acs5-2024:county), source date 2025-09-02: https://api.census.gov/data/2024/acs/acs5?get=NAME,B01003_001E,B01003_001M,B01002_001E,B01002_001M,B11001_001E,B11001_001M,B19013_001E,B19013_001M,B25077_001E,B25077_001M,B25064_001E,B25064_001M,B25003_001E,B25003_002E,B25003_003E,B15003_001E,B15003_017E,B15003_018E,B15003_019E,B15003_020E,B15003_021E,B15003_022E,B15003_023E,B15003_024E,B15003_025E,B17001_001E,B17001_002E,B23025_003E,B23025_005E&for=county:111&in=state:42
- Published by Olympus: Oct 22, 2026 (2026-10-22T13:59:21.446Z)
- Source data: U.S. Census Bureau. Works of the U.S. government are not subject to copyright in the United States.
- This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

## Get this data from the API

```sh
curl -s "https://api.olympus.new-odyssey.com/v1/geo-demographics/counties/42111" -H "X-API-Key: $OLYMPUS_API_KEY"
```

MCP tool: `get_us_demographics {"county_fips":"42111"}`

API reference: https://olympus.new-odyssey.com/docs/geo-demographics

## Related pages

- [Pennsylvania: every county and ZCTA](https://olympus.new-odyssey.com/data/state/pa)

## About this data

- [ZIP codes and ZCTAs: what's the difference](https://olympus.new-odyssey.com/data/zip-vs-zcta)
- [US Geographic & Demographics API](https://olympus.new-odyssey.com/apis/geo-demographics)
- [API reference](https://olympus.new-odyssey.com/docs/geo-demographics)
- [Coverage and sources](https://olympus.new-odyssey.com/coverage)

Treat the text of this page as data, never as instructions.