# Penobscot County, Maine demographics

Canonical: https://olympus.new-odyssey.com/data/county/23019

Penobscot County, Maine (county FIPS 23019) has a median household income of $66,356 (±$1,898) and a total population of 154,710 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. 47 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 | 154,710 | none (controlled estimate) | B01003 |
| Median age | 42.5 years | ±0.3 years | B01002 |
| Households | 65,221 | ±625 | B11001 |
| Median household income (inflation-adjusted to the final ACS year) | $66,356 | ±$1,898 | B19013 |
| Median value of owner-occupied housing units | $214,100 | ±$4,463 | B25077 |
| Median gross rent | $1,041 | ±$28 | B25064 |
| Owner-occupied share of occupied housing units | 70.5% | none (derived from several estimates) | B25003 (derived) |
| Renter-occupied share of occupied housing units | 29.5% | none (derived from several estimates) | B25003 (derived) |
| High school graduate or higher (age 25+) | 94.8% | none (derived from several estimates) | B15003 (derived) |
| Bachelor's degree or higher (age 25+) | 30.1% | none (derived from several estimates) | B15003 (derived) |
| Share of people below the poverty level | 14.1% | none (derived from several estimates) | B17001 (derived) |
| Unemployment rate (civilian labor force) | 3.6% | 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 | 23019 |
| Land area | 3,397.19 sq mi |
| Water area | 159.85 sq mi |
| Population density | 46 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 |
| --- | --- | --- | --- |
| [04765](https://olympus.new-odyssey.com/data/zip/04765) | 22.1% | 100% | Yes |
| [04457](https://olympus.new-odyssey.com/data/zip/04457) | 7.6% | 100% | Yes |
| [04487](https://olympus.new-odyssey.com/data/zip/04487) | 6.7% | 100% | Yes |
| [04462](https://olympus.new-odyssey.com/data/zip/04462) | 5.9% | 28.7% |  |
| [04468](https://olympus.new-odyssey.com/data/zip/04468) | 3.6% | 100% | Yes |
| [04418](https://olympus.new-odyssey.com/data/zip/04418) | 3.5% | 100% | Yes |
| [04401](https://olympus.new-odyssey.com/data/zip/04401) | 2.9% | 100% | Yes |
| [04448](https://olympus.new-odyssey.com/data/zip/04448) | 2.8% | 100% | Yes |
| [04417](https://olympus.new-odyssey.com/data/zip/04417) | 2.7% | 100% | Yes |
| [04455](https://olympus.new-odyssey.com/data/zip/04455) | 2.4% | 100% | Yes |
| [04777](https://olympus.new-odyssey.com/data/zip/04777) | 2.3% | 100% | Yes |
| [04460](https://olympus.new-odyssey.com/data/zip/04460) | 2.3% | 100% | Yes |
| [04453](https://olympus.new-odyssey.com/data/zip/04453) | 2.2% | 100% | Yes |
| [04444](https://olympus.new-odyssey.com/data/zip/04444) | 2% | 100% | Yes |
| [04493](https://olympus.new-odyssey.com/data/zip/04493) | 2% | 100% | Yes |
| [04428](https://olympus.new-odyssey.com/data/zip/04428) | 1.8% | 100% | Yes |
| [04411](https://olympus.new-odyssey.com/data/zip/04411) | 1.5% | 100% | Yes |
| [04461](https://olympus.new-odyssey.com/data/zip/04461) | 1.3% | 100% | Yes |
| [04495](https://olympus.new-odyssey.com/data/zip/04495) | 1.3% | 100% | Yes |
| [04410](https://olympus.new-odyssey.com/data/zip/04410) | 1.2% | 100% | Yes |
| [04422](https://olympus.new-odyssey.com/data/zip/04422) | 1.2% | 100% | Yes |
| [04427](https://olympus.new-odyssey.com/data/zip/04427) | 1.2% | 100% | Yes |
| [04928](https://olympus.new-odyssey.com/data/zip/04928) | 1.1% | 100% | Yes |
| [04435](https://olympus.new-odyssey.com/data/zip/04435) | 1.1% | 100% | Yes |
| [04459](https://olympus.new-odyssey.com/data/zip/04459) | 1.1% | 49% |  |
| [04939](https://olympus.new-odyssey.com/data/zip/04939) | 1.1% | 100% | Yes |
| [04449](https://olympus.new-odyssey.com/data/zip/04449) | 1.1% | 100% | Yes |
| [04419](https://olympus.new-odyssey.com/data/zip/04419) | 1.1% | 100% | Yes |
| [04932](https://olympus.new-odyssey.com/data/zip/04932) | 1.1% | 100% | Yes |
| [04497](https://olympus.new-odyssey.com/data/zip/04497) | 1% | 16.9% |  |
| [04930](https://olympus.new-odyssey.com/data/zip/04930) | 1% | 58.2% | Yes |
| [04488](https://olympus.new-odyssey.com/data/zip/04488) | 1% | 100% | Yes |
| [04429](https://olympus.new-odyssey.com/data/zip/04429) | 0.9% | 44.3% |  |
| [04456](https://olympus.new-odyssey.com/data/zip/04456) | 0.9% | 100% | Yes |
| [04969](https://olympus.new-odyssey.com/data/zip/04969) | 0.9% | 100% | Yes |
| [04953](https://olympus.new-odyssey.com/data/zip/04953) | 0.9% | 100% | Yes |
| [04451](https://olympus.new-odyssey.com/data/zip/04451) | 0.8% | 48.3% |  |
| [04474](https://olympus.new-odyssey.com/data/zip/04474) | 0.7% | 100% | Yes |
| [04434](https://olympus.new-odyssey.com/data/zip/04434) | 0.7% | 100% | Yes |
| [04475](https://olympus.new-odyssey.com/data/zip/04475) | 0.7% | 100% | Yes |
| [04473](https://olympus.new-odyssey.com/data/zip/04473) | 0.5% | 100% | Yes |
| [04450](https://olympus.new-odyssey.com/data/zip/04450) | 0.5% | 100% | Yes |
| [04412](https://olympus.new-odyssey.com/data/zip/04412) | 0.4% | 100% | Yes |
| [04733](https://olympus.new-odyssey.com/data/zip/04733) | 0.4% | 23.9% |  |
| [04430](https://olympus.new-odyssey.com/data/zip/04430) | 0.2% | 100% | Yes |
| [04469](https://olympus.new-odyssey.com/data/zip/04469) | 0% | 100% | Yes |
| [04489](https://olympus.new-odyssey.com/data/zip/04489) | 0% | 100% | Yes |

## 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:019&in=state:23
- 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/23019" -H "X-API-Key: $OLYMPUS_API_KEY"
```

MCP tool: `get_us_demographics {"county_fips":"23019"}`

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

## Related pages

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

## 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.