Residential delivery area · California
ZIP Code 94538: Fremont, CA
ZIP code 94538 is in Fremont, California, entirely in Alameda County (Census 2020 ZIP-county file). About 68,000 people live there (Census Bureau, ACS 2020-2024), the 2nd most populous of Fremont's 4 residential ZIP codes. Median household income is $147,301 (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Fremont · 4 residential ZIPs
- County
- Alameda County
- Census places
- Fremont
- Neighborhoods
- Curtner, Irvington District, Snoboy GeoNames
- Metro area
- San Francisco-Oakland-Fremont, CA
- House districts
- CA-17 (74%), CA-14 (26%) 119th Congress, by share of land
- State
- California
- Time zone
- Pacific
- Land area
- 16.5 sq mi · 4,098 people per sq mi
- PO Box ZIPs
- 94537 also use the name Fremont
Where is ZIP code 94538?
94538 centers on 37.501°, -121.957° and covers 16.5 square miles of land plus 0.1 of water. It borders 5 ZIP codes: 94539, 94560, 94536, 95134, 95035.
The map draws ZIP code areas only. For the streets inside 94538, 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); neighborhoods from the GeoNames gazetteer (CC BY 4.0), placed in this ZIP code by PlainZIP.
How does 94538 compare with the rest of Fremont?
| Measure | 94538 | In Fremont | In Alameda County | In CA |
|---|---|---|---|---|
| People (ACS 2020-2024) | 67,781 | 2nd of 4 | 4th of 53 | 71st of 1,802 |
| Median household income | $147k | 4th of 4 | 18th of 48 | 168th of 1,189 |
| Median home value | $1.14M | 4th of 4 | 24th of 49 | 262nd of 1,317 |
Its median household income is higher than in 96% of U.S. residential ZIP codes, and it is denser than 92% 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 94538?
The 2020 Census counted 66,424 people in 94538; the ACS, which samples households over 2020-2024, estimates 67,781. Between the 2010 and 2020 censuses its population grew 8.6% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 67,781
- 2020 Census count
- 66,424+8.6% since 2010 (61,148)
- Households
- 23,628
- Median age
- 36.7
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 94538?
Of the 67,781 people the ACS estimates in 94538, 21.3% are under 18 and 11.7% are 65 or older. The largest group by race and Hispanic origin is Asian (not Hispanic) (58.0%), then Hispanic or Latino (18.9%).
- Under 1821.3%
- 18 to 6467.0%
- 65 and older11.7%
- Asian, not Hispanic58.0%
- Hispanic or Latino18.9%
- White, not Hispanic15.2%
- Other or two or more4.2%
- Black, not Hispanic3.6%
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 94538 earn?
Median household income is $147,301 (ACS 2020-2024), the 18th highest of the 48 ranked ZIP codes in Alameda County. It is not measurably different from 2015-2019 ($138,003 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $147,301
- Income per person
- $63,191
- Below the poverty line
- 5.5%
- Unemployed (of the labor force)
- 4.3%
- Adults 25+ with a bachelor's degree
- 54.8%
- Adjusted gross income per tax return, 2022
- $136,91231,450 returns; wages 90% 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 94538?
FHFA's house price index for 94538, built from repeat sales and appraisals of the same homes, rose 89% from 2015 to 2025 and rose 38% from 2020 to 2025, and moved −12.4% in 2025.
- Median home value (owners' estimate)
- $1,136,600
- Median gross rent
- $2,860
- Homes owned by their occupants
- 44.7%
- Housing units
- 24,854
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 94538?
2,749 business establishments had a location in this ZIP code in 2023, 67 fewer than in 2018; the most are in professional, scientific, and technical services (ZIP Code Business Patterns).
- Professional, scientific, and technical services458
- Health care and social assistance401
- Accommodation and food services264
- Wholesale trade261
- Retail trade251
- Manufacturing197
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 94538?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 94539 | Fremont | 52,396 | $244k | 2.7 mi |
| 94560 | Newark | 46,903 | $169k | 4.1 mi |
| 94536 | Fremont | 70,619 | $168k | 5.0 mi |
| 95134 | San Jose | 30,471 | $204k | 5.0 mi |
| 95035 | Milpitas | 78,810 | $179k | 6.2 mi |
| 95002 | Alviso | 1,542 | $122k | 5.3 mi (near) |
| 94089 | Sunnyvale | 22,699 | $158k | 6.9 mi (near) |
| 94586 | Sunol | 971 | $205k | 7.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.