ZIP Codes of Alpine County, CA

Population & People
Population & People
Total Population
1,567
Household Income
Household Income
Median Income
$100,417
Housing
Housing
Total Housing Units
1,250
Business & Economy
Business & Economy
Total Businesses
40
Employment
Employment
Employment Rate
57.07%
Education
Education
Bachelor's Degree+
41.26%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 2 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:2 ZIP Codes (1 Standard, 1 PO Box, 0 Unique) [See All]
Area Code:530
Timezone:Pacific (GMT -08:00)
Local Time:2:11:27 PM
Population:1,567 [See All]
FIPS:06003
CBSA:Gardnerville Ranchos, NV-CA
Land Area:408 sq mi
Water Area:2 sq mi
Coordinates:38.6798, -119.9147
Quick Link:
https://www.zip-codes.com/county/ca-alpine.asp
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California's fastest-growing county
Population up 31.8% over the past decade.

Standout ZIPs in this County


Most Populous
Markleeville · 1,349 people
86.1% of county total
Highest Income
Markleeville · $100,417 median
1.0× county average
Largest Land Area
Markleeville · 353.3 sq mi
Spans the most ground
Fastest Growth
Markleeville · 23.6% (10-yr)
1,091 → 1,349 residents
Most Educated
— no education data

Things worth knowing about Alpine County


1,567 residents live across 2 ZIPs covering 408 sq mi, served by 2 distinct USPS-recognized cities.

Population moved from 1,189 to 1,567 from 2014 to 2024 — a +31.8% change. 2 ZIPs gained residents, 0 lost.

The county's wealthiest ZIP 96120 (Markleeville, $100,417 median) and poorest ZIP 96120 (Markleeville, $100,417) are 0.0 miles apart — a 1.0× income gap across local geography.

Median home values vary 1.3× across this county — from $603,100 in 96120 (Markleeville) to $783,300 in 95646 (Kirkwood).

Density varies across the county — from 4 people/sq mi in 96120 (Markleeville) to 4 in 95646 (Kirkwood).

Educational attainment ranges from 34.1% bachelor's+ in 96120 (Markleeville) to 77.9% in 95646 (Kirkwood) — the breadth of educational profiles across the area.

Within California, this is the #58 most populous of 58 counties and ranks #22 for median household income with the #1 fastest decade growth .

On the national stage, Alpine County is and #50 for decade growth .

Weighted by population, the typical household earns about $100,417 across the county — reflecting what a typical resident sees, not a simple ZIP average.

41.3% of adults age 25+ hold a bachelor's degree or higher (458 of 1,110 reporting).

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

Stories about Alpine County


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.

Markleeville

All ZIP Codes in Alpine County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
96120MarkleevilleStandard1,349$100,417353.323.6%
95646KirkwoodPO Box21854.9122.4%

Adjacent & Nearby Counties