County ZIP codes · California · FIPS 06077
San Joaquin County, CA ZIP Codes
San Joaquin County, California has 47 ZIP codes (Census 2020 ZCTA-county file; GeoNames postal codes, October 2026): 36 residential and 11 for PO boxes or a single organization. 30 of the residential ones lie mainly in San Joaquin County and 6 mainly in a neighboring county; 9 cross the county line. Median household income ranges from $31,020 in 95202 (Stockton) to $176,952 in 95391 (Tracy) (Census Bureau, ACS 2020-2024).
- ACS2020-24
- Census2020
Where are the ZIP codes of San Joaquin County?
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).
How different are its ZIP codes?
The middle half of its ranked ZIP codes (1,000+ people living in households) report median household incomes between $74,886 and $112,097.
They carry 20 postal town names.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013).
All 36 residential ZIP codes in San Joaquin County
30 ZIP codes lie mainly in San Joaquin County; 6 more reach into it from a neighboring county and follow the first table.
| In this county | ||||||
|---|---|---|---|---|---|---|
| 95206 | Stockton | 68,558 | 515 | $83k | $425k | 100% |
| 95376 | Tracy | 54,488 | 7,153 | $103k | $618k | 100% |
| 95207 | Stockton | 52,414 | 7,234 | $70k | $433k | 100% |
| 95240 | Lodi | 50,517 | 741 | $82k | $472k | 100% |
| 95336 | Manteca | 50,185 | 1,309 | $89k | $546k | 100% |
| 95337 | Manteca | 48,731 | 1,073 | $117k | $645k | 100% |
| 95209 | Stockton | 47,409 | 5,755 | $109k | $495k | 100% |
| 95210 | Stockton | 41,549 | 5,464 | $68k | $362k | 100% |
| 95205 | Stockton | 39,608 | 4,405 | $60k | $324k | 100% |
| 95377 | Tracy | 37,739 | 343 | $158k | $835k | 89% |
| 95330 | Lathrop | 35,395 | 1,644 | $125k | $643k | 100% |
| 95219 | Stockton | 31,713 | 271 | $112k | $581k | 84% |
| 95204 | Stockton | 31,035 | 5,853 | $76k | $387k | 100% |
| 95212 | Stockton | 28,437 | 1,343 | $112k | $539k | 100% |
| 95242 | Lodi | 28,427 | 313 | $105k | $567k | 100% |
| 95215 | Stockton | 24,847 | 268 | $72k | $398k | 100% |
| 95366 | Ripon | 18,954 | 552 | $112k | $708k | 100% |
| 95203 | Stockton | 15,930 | 2,584 | $63k | $370k | 100% |
| 95304 | Tracy | 15,841 | 103 | $115k | $894k | 100% |
| 95320 | Escalon | 13,500 | 152 | $83k | $522k | 100% |
| 95220 | Acampo | 7,931 | 137 | $115k | $707k | 100% |
| 95202 | Stockton | 7,066 | 6,666 | $31k | $377k | 100% |
| 95236 | Linden | 4,490 | 35 | $105k | $651k | 98% |
| 95258 | Woodbridge | 4,144 | 1,287 | $94k | $560k | 100% |
| 95231 | French Camp | 3,896 | 362 | $90k | $455k | 100% |
| 95237 | Lockeford | 3,639 | 491 | $87k | $491k | 100% |
| 95686 | Thornton | 1,171 | 36 | $52k | $449k | 100% |
| 95227 | Clements | 910 | 24 | $151k | $674k | 100% |
| 95211 | Stockton | 765 | 7,727 | – | – | 100% |
| 95253 | Victor | 609 | 362 | $145k | – | 100% |
Partly in San Joaquin County
| In this county | ||||||
|---|---|---|---|---|---|---|
| 95632 | Galt | 32,493 | 287 | $102k | $522k | 31% |
| 95391 | Tracy | 25,574 | 952 | $177k | $947k | 31% |
| 95230 | Farmington | 403 | 3 | $128k | $380k | 22% |
| 95641 | Isleton | 2,214 | 53 | $75k | $247k | 3% |
| 95361 | Oakdale | 34,810 | 160 | $93k | $516k | 2% |
| 95385 | Vernalis | 602 | 22 | $53k | – | 2% |
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; county shares by land area (Census 2020 ZCTA-county relationship file).
Which ZIP codes cross the county line?
9 ZIP codes of San Joaquin County extend into another county. A ZIP code follows mail routes, not county borders.
| ZIP | In San Joaquin | Elsewhere |
|---|---|---|
| 95377 | 89% | Alameda County 11% |
| 95361 | 2% | Stanislaus County 98% |
| 95632 | 31% | Sacramento County 69% |
| 95219 | 84% | Contra Costa County 16% |
| 95391 | 31% | Alameda County 69% |
| 95236 | 98% | Calaveras County 2% |
| 95641 | 3% | Sacramento County 97% |
| 95385 | 2% | Stanislaus County 98% |
| 95230 | 22% | Stanislaus County 49%; Calaveras County 29% |
Source: U.S. Census Bureau, 2020 ZCTA-county relationship file (shares of land area).
PO Box and single-organization ZIP codes
Source: GeoNames postal codes (CC BY 4.0).
Which first three digits do San Joaquin County's ZIP codes use?
The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. San Joaquin County's ZIP codes use 3 prefixes: 952, 953 and 956.
| Prefix | Sectional center | Here | All codes |
|---|---|---|---|
| 952 | Sacramento, CA (SCF 956) | 32 | 52 |
| 953 | Sacramento, CA (SCF 956) | 12 | 79 |
| 956 | Sacramento, CA (SCF 956) | 3 | 94 |
Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.