Residential delivery area · California
ZIP Code 94951: Penngrove, CA
ZIP code 94951 uses the postal name Penngrove, California and lies entirely in Sonoma County (Census 2020 ZIP-county file). About 3,300 people live there (Census Bureau, ACS 2020-2024). Median household income is $106,332 (Census Bureau, ACS 2020-2024). By Census place, 31% of its land lies in Penngrove (a census-designated place); 70% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Penngrove · its only residential ZIP
- County
- Sonoma County
- Census places
- Penngrove census-designated place
- Metro area
- Santa Rosa-Petaluma, CA
- House district
- CA-4 119th Congress
- State
- California
- Time zone
- Pacific
- Land area
- 12.9 sq mi · 256 people per sq mi
Where is ZIP code 94951?
94951 centers on 38.323°, -122.645° and covers 12.9 square miles of land. It borders 5 ZIP codes: 94928, 94931, 94954, 94952, 95404.
The map draws ZIP code areas only. For the streets inside 94951, 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 94951 compare with the rest of Sonoma County?
| Measure | 94951 | In Sonoma County | In CA |
|---|---|---|---|
| People (ACS 2020-2024) | 3,294 | 21st of 40 | 1,206th of 1,802 |
| Median household income | $106k | 12th of 22 | 487th of 1,189 |
| Median home value | $1.21M | 4th of 26 | 223rd of 1,317 |
Its median household income is higher than in 85% of U.S. residential ZIP codes, and it is denser than 65% of all 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 94951?
The 2020 Census counted 4,172 people in 94951; the ACS, which samples households over 2020-2024, estimates 3,294. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 3,294±531 (90% margin)
- 2020 Census count
- 4,172
- Households
- 1,419
- Median age
- 44.2
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 94951?
Of the 3,294 people the ACS estimates in 94951, 22.9% are under 18 and 27.9% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (73.5%), then Hispanic or Latino (17.0%).
- Under 1822.9%
- 18 to 6449.3%
- 65 and older27.9%
- White, not Hispanic73.5%
- Hispanic or Latino17.0%
- Other or two or more7.7%
- Black, not Hispanic1.1%
- Asian, not Hispanic0.6%
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 94951 earn?
Median household income is $106,332 (ACS 2020-2024), the 12th highest of the 22 ranked ZIP codes in Sonoma County.
- Median household income
- $106,332±$19,697
- Income per person
- $70,956
- Below the poverty line
- 8.2%
- Unemployed (of the labor force)
- 4.0%
- Adults 25+ with a bachelor's degree
- 46.5%
- Adjusted gross income per tax return, 2022
- $132,8682,200 returns; wages 56% 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 94951?
FHFA's house price index for 94951, built from repeat sales and appraisals of the same homes, rose 57% from 2015 to 2025 and rose 21% from 2020 to 2025, and moved −2.9% in 2025.
- Median home value (owners' estimate)
- $1,207,000
- Median gross rent
- $1,904
- Homes owned by their occupants
- 71.4%
- Housing units
- 1,548
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 94951?
120 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction37
- Health care and social assistance12
- Professional, scientific, and technical services11
- Other services (except public administration)11
- Manufacturing9
- Retail trade8
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 94951?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 94928 | Rohnert Park | 46,829 | $99k | 3.1 mi |
| 94931 | Cotati | 9,487 | $102k | 3.9 mi |
| 94954 | Petaluma | 37,574 | $114k | 7.7 mi |
| 94952 | Petaluma | 33,785 | $117k | 8.7 mi |
| 95404 | Santa Rosa | 37,011 | $105k | 14.3 mi |
| 95431 | Eldridge | 43 | – | 7.2 mi (near) |
| 95407 | Santa Rosa | 42,036 | $83k | 7.4 mi (near) |
| 95442 | Glen Ellen | 3,449 | $165k | 8.0 mi (near) |
| 95405 | Santa Rosa | 22,744 | $118k | 8.1 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.