ZIP Codes of Mariposa County, CA

Population & People
Population & People
Total Population
16,236
Household Income
Household Income
Median Income
$63,646
Housing
Housing
Total Housing Units
9,045
Business & Economy
Business & Economy
Total Businesses
345
Employment
Employment
Employment Rate
52.78%
Education
Education
Bachelor's Degree+
32.27%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 8 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:8 ZIP Codes (7 Standard, 1 PO Box, 0 Unique) [See All]
Area Codes:209 / 350
Timezone:Pacific (GMT -08:00)
Local Time:2:11:29 PM
Population:16,236 [See All]
FIPS:06043
Land Area:1,109 sq mi
Water Area:13 sq mi
Coordinates:37.5686, -119.9243
Quick Link:
https://www.zip-codes.com/county/ca-mariposa.asp
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Extreme education divide
Bachelor's share ranges 12.8% to 71.0% across ZIPs — a 58-point gap.
Among California's 5 oldest counties
Median age 51.2.

Standout ZIPs in this County


Most Populous
Mariposa · 10,006 people
61.6% of county total
Highest Income
Catheys Valley · $81,302 median
1.3× county average
Largest Land Area
Mariposa · 347.2 sq mi
Spans the most ground
Fastest Growth
Yosemite National Park · 66.2% (10-yr)
1,312 → 2,181 residents
Most Educated
Yosemite National Park · 36.7% bachelor's+
649 of 1,769 adults 25+

Things worth knowing about Mariposa County


16,236 residents live across 8 ZIPs covering 1,109 sq mi, served by 8 distinct USPS-recognized cities.

Population moved from 16,580 to 16,236 from 2014 to 2024 — a -2.1% change. 2 ZIPs gained residents, 6 lost.

The county's wealthiest ZIP 95306 (Catheys Valley, $81,302 median) and poorest ZIP 95389 (Yosemite National Park, $51,500) are 29.1 miles apart — a 1.6× income gap across local geography.

Median home values vary 1.6× across this county — from $276,900 in 95318 (El Portal) to $450,000 in 95345 (Midpines).

Density varies across the county — from 5 people/sq mi in 95345 (Midpines) to 29 in 95338 (Mariposa).

Educational attainment ranges from 12.8% bachelor's+ in 95311 (Coulterville) to 71.0% in 95345 (Midpines) — the breadth of educational profiles across the area.

Within California, this is the #53 most populous of 58 counties and ranks #50 for median household income .

Weighted by population, the typical household earns about $64,196 across the county — reflecting what a typical resident sees, not a simple ZIP average.

32.3% of adults age 25+ hold a bachelor's degree or higher (4,083 of 12,653 reporting).

7 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Mariposa County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
1,109
square miles
Avg density
14.6
people per sq mi
Population
16,236
across 8 ZIPs
Mariposa
347.2 sq mi
10,006 residents
Yosemite National Park
257.9 sq mi
2,181 residents
Coulterville
242.0 sq mi
2,245 residents

Single-ZIP anchor

One ZIP holds the majority of this county's population — a sign of a county built around a single city or town.

Mariposa

All ZIP Codes in Mariposa County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
95338MariposaStandard10,006$67,485347.2-9.7%
95311CoultervilleStandard2,245$56,029242.08.3%
95389Yosemite National ParkStandard2,181$51,500257.966.2%
95306Catheys ValleyStandard939$81,30297.6-1.4%
95318El PortalPO Box582$57,09742.7-3.2%
95345MidpinesStandard279$68,46454.7-37.7%
93623Fish CampStandard428.6-93.1%
95325HornitosStandard038.2-100.0%

Adjacent & Nearby Counties