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ZIP Code 83420, Idaho

ZIP Code 83420 profile, demographic data, and geographic information.

ZCTA5 83420 is a 5-digit ZIP Code area located in Fremont County, Idaho. As of official census estimates, it has a reported population of 2,580. The land area covers 410.77 sq mi. [1]

Demographics & Population

Demographic Metric Estimate / Count Margin of Error Survey Period / Source
Total Population 2,580 ±428 2020-2024 / Census ACS 5-Year 2024
Median Age 49.4 yrs ±6.5 2020-2024 / Census ACS 5-Year 2024
Total Households 990 ±150 2020-2024 / Census ACS 5-Year 2024
Source: U.S. Census Bureau (PEP, ACS 5-Year).

Housing & Real Estate Profile

Housing Metric Estimate / Value Margin of Error
Total Housing Units 1,326 ±148
Occupied Housing Units 990 ±150
Vacant Housing Units 336 ±115
Median Home Value $337,700 ±$36,107
Median Gross Rent $1,025 ±$795
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Economy & Workforce

Economic Metric Estimate / Value Margin of Error
Median Household Income $69,286 ±$9,836
Per Capita Income $42,560 ±$11,530
Poverty Rate 5.3% ±2.4%
Population Below Poverty Level 134 ±66
Unemployment Rate 3% ±2%
Civilian Labor Force, Employed 1,353 ±268
Broadband Internet Rate 95.4% ±4.2%
Source: U.S. Census Bureau ACS 5-Year (2020-2024).

Local Government & Public Administration

Authoritative general-purpose local government units serving this area U.S. Census Bureau GUS (2026) / GMAF
Government Unit Unit Type Jurisdiction Role Contact / Address
GUS Population: 14,399 (2024)
ID: 124638
County Official County Government
Contact: COUNTY CLERK
151 W 1ST N ST, STE 12, SAINT ANTHONY ID 83445-1409

Education

Listing 2 local institutions (NCES 2024-2025) External reference via K12Guides
Institution Type Grades Location
Regular School Nearby PK-05 ASHTON, ID
Regular School Nearby 06-12 ASHTON, ID
Source: k12guides.com.

Community Facilities & Infrastructure

Displaying 7 civic institutions across 1 datasets queried CMS • IPEDS • IMLS
Facility Name Category Relationship Address / Location Contact
FREMONT DISTRICT - ASHTON
Library 5.9 mi away 925 MAIN, ASHTON, ID, 83420
(208) 652-7280
FREMONT DISTRICT - BOOKMOBILE
Library 6.2 mi away 420 N BRIDGE STE E, ASHTON, ID, 83420
(208) 652-7280
FREMONT DISTRICT - ST. ANTHONY
Library 18.8 mi away 420 N BRIDGE STE E, ST. ANTHONY, ID, 83445
(208) 624-3192
VALLEY OF THE TETONS DISTRICT - TETONIA
Library 18.9 mi away 6168 S. 2ND, TETONIA, ID, 83452
(208) 354-5522
FREMONT DISTRICT - ISLAND PARK
Library 22.1 mi away 3775 SAND CRANE DRIVE, ISLAND PARK, ID, 83429
(208) 558-0991
SUGAR SALEM SCHOOL/COMMUNITY
Library 24.3 mi away 1 DIGGER DR, SUGAR CITY, ID, 83448 —
SUGAR SALEM SCHOOL/COMMUNITY
Library 24.3 mi away 1 DIGGER DR, SUGAR CITY, ID, 83448
(208) 356-0271
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.

Climate & Weather Observations

NOAA Monthly Climate Normals

Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at ASHTON 1N, ID US, located 6.6 miles from ZCTA5 83420. Local microclimates, topography, and elevation may cause municipal conditions to differ.
Month High (°F) Low (°F) Mean (°F) Precip (in) Snow (in)
January 28.9° 13.4° 21.1° 2.31" 19.8"
February 32.6° 16.8° 24.7° 1.53" 10.7"
March 42.3° 24.5° 33.4° 1.29" 5.3"
April 53.8° 31.4° 42.6° 1.70" 2.0"
May 65.3° 39.7° 52.5° 2.24" 0.0"
June 73.1° 45.7° 59.4° 2.15" 0.0"
July 82.6° 50.9° 66.7° 0.64" 0.0"
August 82.7° 48.5° 65.6° 0.85" 0.0"
September 72.5° 41.8° 57.1° 1.17" 0.0"
October 57.1° 32.2° 44.6° 1.63" 1.6"
November 40.1° 22.7° 31.4° 1.90" 10.5"
December 29.2° 14.6° 21.9° 2.26" 20.2"
Source: NOAA U.S. Climate Normals (1991–2020).

Local Weather Forecast

Weather forecast data is currently unavailable in the local cache.

Nearby Cities & Communities

Listing adjacent communities by spatial proximity (miles) Proximity discovery
Community Name Classification Distance Population
Drummond city City 4.2 mi —
Warm River city City 4.3 mi —
Ashton city City 6.2 mi —
Newdale city City 18.3 mi —
Tetonia city City 18.8 mi —
St. Anthony city City 19.0 mi —

Sources & Data Provenance

  1. Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 83420. • Official Source Dataset →
  2. Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
  3. Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
  4. Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.