ZIP codes in Tuolumne County
19 ZIPs touch Tuolumne County, California. The blue dashed line is the county border; orange ZIPs reach into it.
19
ZIP codes
5
cross the county line
62,883
people in these ZIPs
58
counties in CA
Most people
Tuolumne County ZIP list
More counties in California
- Sonoma County52
- Stanislaus County32
- Sutter County15
- Tehama County17
- Trinity County14
- Tulare County51
- Ventura County53
- Yolo County22
- Yuba County18
Questions people actually ask
How many ZIP codes are in Tuolumne County, California?
19 ZIP codes reach into Tuolumne County, including 2 PO Box or single-address ZIPs placed by the town they serve. 5 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Tuolumne County has the most people?
95370 (Sonora) has about 28,355 residents, the most of any ZIP touching Tuolumne County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Tuolumne County and another county?
Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Tuolumne County. For one address, pin the exact spot on the ZIP finder to see its county.
Where does this list come from?
ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.
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Updated 2026-11-10 · Where the data comes from