ZIP Code Tabulation Area · Idaho

ZIP Code 83421: Fremont County, ID

ZIP Code 83421 (Fremont County, Idaho) has an estimated 220 residents in 115 households. The median household income is —, the median home value is $282,400 and the median gross rent is —. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Some estimates have a large margin of error. 7 figures for this ZIP (population, median age, households, per capita income, unemployment, bachelor's or higher, work from home) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

220*

Margin of error ±180· estimate has a large margin of error

Median household income

—

Margin of error not available

Median home value

$282,400

Margin of error ±$30,510

Median gross rent

—

Margin of error not available

Median age

62.4 yrs*

Margin of error ±34.6 yrs· estimate has a large margin of error

Mean travel time to work

—

Margin of error not available

How ZIP 83421 compares with Idaho and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 8342162.4 yrs*Idaho37.3 yrsUnited States38.9 yrs

Median household income

ZIP 83421—Idaho$77,800United States$80,734

Per capita income

ZIP 83421$125,365*Idaho$38,952United States$44,673

Poverty rate

ZIP 834210.0%Idaho10.6%United States12.5%

Unemployment rate

ZIP 834210.0%*Idaho3.7%United States5.2%

Bachelor's degree or higher

ZIP 834217.6%*Idaho31.8%United States35.7%

Median home value

ZIP 83421$282,400Idaho$418,600United States$332,700

Median gross rent

ZIP 83421—Idaho$1,238/moUnited States$1,413/mo

Owner-occupied homes

ZIP 83421100.0%Idaho72.1%United States65.2%

Mean travel time to work

ZIP 83421—Idaho21.6 minUnited States26.4 min

Worked from home

ZIP 834210.0%*Idaho13.3%United States15.1%

All figures for ZIP 83421

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 83421 — ACS 2020–2024 5-year estimates
Measure	ZIP 83421	Margin of error	Idaho	United States
Total population	220*	±180	1,934,262	334,922,499
Median age	62.4 yrs*	±34.6 yrs	37.3 yrs	38.9 yrs
Households	115*	±85	713,005	129,227,496
Median household income	—	—	$77,800	$80,734
Per capita income	$125,365*	±$87,609	$38,952	$44,673
Poverty rate	0.0%	±5.5 pts	10.6%	12.5%
Unemployment rate	0.0%*	±17.1 pts	3.7%	5.2%
Bachelor's degree or higher	7.6%*	±17.4 pts	31.8%	35.7%
Median home value	$282,400	±$30,510	$418,600	$332,700
Median gross rent	—	—	$1,238/mo	$1,413/mo
Owner-occupied homes	100.0%	±0.0 pts	72.1%	65.2%
Mean travel time to work	—	—	21.6 min	26.4 min
Worked from home	0.0%*	±17.1 pts	13.3%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 83421
Group	ZIP 83421	Idaho	United States
White alone, not Hispanic or Latino	100.0%	78.6%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	0.7%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.7%	0.5%
Asian alone, not Hispanic or Latino	0.0%	1.3%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.1%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.6%	0.6%
Two or more races, not Hispanic or Latino	0.0%	4.2%	4.3%
Hispanic or Latino (of any race)	0.0%	13.6%	19.3%

Where ZIP 83421 is

State: Idaho
Main county: Fremont County
Land area: 11.69 sq mi· about 19 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Fremont County

83420 Fremont County, ID 83429 Fremont County, ID 83433 Island Park, ID 83438 Parker, ID 83445 Fremont County, ID

See every ZIP code in Idaho, or compare ZIP 83421 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.