ZIP Codes of Humboldt County, NV

Population & People
Population & People
Total Population
18,495
Household Income
Household Income
Median Income
$73,764
Housing
Housing
Total Housing Units
8,270
Business & Economy
Business & Economy
Total Businesses
419
Employment
Employment
Employment Rate
60.39%
Education
Education
Bachelor's Degree+
18.11%
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 (3 Standard, 5 PO Box, 0 Unique) [See All]
Area Code:775
Timezone:Pacific (GMT -08:00)
Local Time:2:13:13 PM
Population:18,495 [See All]
FIPS:32013
CBSA:Winnemucca, NV
Land Area:8,420 sq mi
Water Area:7 sq mi
Coordinates:41.3645, -117.8417
Quick Link:
https://www.zip-codes.com/county/nv-humboldt.asp
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Nevada's #9 most populous county
18,495 residents across 8 ZIPs — #9 of 18 Nevada counties.

Standout ZIPs in this County


Most Populous
Winnemucca · 17,153 people
92.7% of county total
Highest Income
Paradise Valley · $124,271 median
1.7× county average
Largest Land Area
Winnemucca · 5,369.8 sq mi
Spans the most ground
Fastest Growth
Winnemucca · 9.1% (10-yr)
15,727 → 17,153 residents
Most Educated
Winnemucca · 17.5% bachelor's+
1,933 of 11,043 adults 25+

Things worth knowing about Humboldt County


18,495 residents live across 8 ZIPs covering 8,420 sq mi, served by 7 distinct USPS-recognized cities.

Population moved from 18,013 to 18,495 from 2014 to 2024 — a +2.7% change. 2 ZIPs gained residents, 6 lost.

The county's wealthiest ZIP 89426 (Paradise Valley, $124,271 median) and poorest ZIP 89421 (Mc Dermitt, $26,000) are 36.5 miles apart — a 4.8× income gap across local geography.

Median home values vary 4.4× across this county — from $71,400 in 89421 (Mc Dermitt) to $312,700 in 89425 (Orovada).

Density varies 19× across the county — from 0 people/sq mi in 89414 (Golconda) to 4 in 89426 (Paradise Valley).

Educational attainment ranges from 11.5% bachelor's+ in 89421 (Mc Dermitt) to 42.4% in 89426 (Paradise Valley) — the breadth of educational profiles across the area.

Within Nevada, this is the #9 most populous of 18 counties and ranks #10 for median household income .

Weighted by population, the typical household earns about $80,984 across the county — reflecting what a typical resident sees, not a simple ZIP average.

18.1% of adults age 25+ hold a bachelor's degree or higher (2,194 of 12,115 reporting).

3 Standard delivery, 5 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Humboldt County


Two counties in one

Median household income spans 4.8× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.

Wealthiest ZIP
Paradise Valley
Median income: $124,271
Population: 341
Bachelor's+: 42.4%
vs
Poorest ZIP (pop >= 500)
Mc Dermitt
Median income: $26,000
Population: 330
Bachelor's+: 11.5%
For every $1 of household income in 89421, the typical household in 89426 earns $4.78.

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
8,420
square miles
Avg density
2.2
people per sq mi
Population
18,495
across 8 ZIPs
Winnemucca
5,369.8 sq mi
17,153 residents
Golconda
1,064.3 sq mi
203 residents
Orovada
1,012.0 sq mi
352 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.

Winnemucca

All ZIP Codes in Humboldt County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
89445WinnemuccaStandard17,153$81,5455,369.89.1%
89425OrovadaStandard352$63,2411,012.0-52.3%
89426Paradise ValleyPO Box341$124,27195.586.3%
89421Mc DermittPO Box330$26,000273.7-60.0%
89414GolcondaStandard2031,064.3-47.9%
89446WinnemuccaPO Box800.0-18.4%
89404DenioPO Box36509.3-18.2%
89438ValmyPO Box095.5-100.0%

Adjacent & Nearby Counties