ZIP Code Tabulation Area · Iowa

ZIP Code 51645: Fremont County, IA

ZIP Code 51645 (Fremont County, Iowa) has an estimated 419 residents in 125 households. The median household income is $217,898, the median home value is — 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. 4 figures for this ZIP (population, household income, bachelor's or higher, commute) are marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

419*

Margin of error ±215· estimate has a large margin of error

Median household income

$217,898*

Margin of error ±$167,832· estimate has a large margin of error

Median home value

—

Margin of error not available

Median gross rent

—

Margin of error not available

Median age

49.3 yrs

Margin of error ±3.7 yrs

Mean travel time to work

18.4 min*

Margin of error ±14.2 min· estimate has a large margin of error

How ZIP 51645 compares with Iowa 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 5164549.3 yrsIowa38.6 yrsUnited States38.9 yrs

Median household income

ZIP 51645$217,898*Iowa$75,059United States$80,734

Per capita income

ZIP 51645$56,899Iowa$40,877United States$44,673

Poverty rate

ZIP 516450.5%Iowa11.1%United States12.5%

Unemployment rate

ZIP 516450.0%Iowa3.6%United States5.2%

Bachelor's degree or higher

ZIP 5164551.2%*Iowa31.4%United States35.7%

Median home value

ZIP 51645—Iowa$208,000United States$332,700

Median gross rent

ZIP 51645—Iowa$972/moUnited States$1,413/mo

Owner-occupied homes

ZIP 5164598.4%Iowa71.7%United States65.2%

Mean travel time to work

ZIP 5164518.4 min*Iowa19.8 minUnited States26.4 min

Worked from home

ZIP 516453.0%Iowa11.3%United States15.1%

All figures for ZIP 51645

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 51645 — ACS 2020–2024 5-year estimates
Measure	ZIP 51645	Margin of error	Iowa	United States
Total population	419*	±215	3,210,507	334,922,499
Median age	49.3 yrs	±3.7 yrs	38.6 yrs	38.9 yrs
Households	125	±50	1,315,707	129,227,496
Median household income	$217,898*	±$167,832	$75,059	$80,734
Per capita income	$56,899	±$7,425	$40,877	$44,673
Poverty rate	0.5%	±0.7 pts	11.1%	12.5%
Unemployment rate	0.0%	±4.5 pts	3.6%	5.2%
Bachelor's degree or higher	51.2%*	±17.0 pts	31.4%	35.7%
Median home value	—	—	$208,000	$332,700
Median gross rent	—	—	$972/mo	$1,413/mo
Owner-occupied homes	98.4%	±7.1 pts	71.7%	65.2%
Mean travel time to work	18.4 min*	±14.2 min	19.8 min	26.4 min
Worked from home	3.0%	±3.7 pts	11.3%	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 51645
Group	ZIP 51645	Iowa	United States
White alone, not Hispanic or Latino	98.1%	82.3%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	3.8%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.2%	0.5%
Asian alone, not Hispanic or Latino	0.0%	2.5%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.2%	0.2%
Some other race alone, not Hispanic or Latino	0.0%	0.3%	0.6%
Two or more races, not Hispanic or Latino	0.0%	3.5%	4.3%
Hispanic or Latino (of any race)	1.9%	7.3%	19.3%

Where ZIP 51645 is

State: Iowa
Main county: Fremont County— also overlaps Mills County, Montgomery County, Page County
Largest overlapping place: Imogene (1% of the ZIP's land area)
Land area: 45.15 sq mi· about 9 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

51639 Fremont County, IA 51640 Fremont County, IA 51648 Fremont County, IA 51649 Fremont County, IA 51650 Fremont County, IA 51652 Fremont County, IA 51653 Fremont County, IA 51654 Fremont County, IA

See every ZIP code in Iowa, or compare ZIP 51645 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.