ZIP Code Tabulation Area · Iowa

ZIP Code 50621: Grundy County, IA

ZIP Code 50621 (Grundy County, Iowa) has an estimated 1,601 residents in 656 households. The median household income is $88,077, the median home value is $214,700 and the median gross rent is $840/mo. 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. One figure for this ZIP (owner-occupied) is marked with *. ACS figures come from a sample, and small areas have fewer responses, so treat these numbers as rough ranges.

Total population

1,601

Margin of error ±162

Median household income

$88,077

Margin of error ±$14,332

Median home value

$214,700

Margin of error ±$21,202

Median gross rent

$840/mo

Margin of error ±$247

Median age

47.8 yrs

Margin of error ±5.0 yrs

Mean travel time to work

19.6 min

Margin of error ±4.0 min

How ZIP 50621 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 5062147.8 yrsIowa38.6 yrsUnited States38.9 yrs

Median household income

ZIP 50621$88,077Iowa$75,059United States$80,734

Per capita income

ZIP 50621$45,311Iowa$40,877United States$44,673

Poverty rate

ZIP 506213.9%Iowa11.1%United States12.5%

Unemployment rate

ZIP 506210.9%Iowa3.6%United States5.2%

Bachelor's degree or higher

ZIP 5062129.6%Iowa31.4%United States35.7%

Median home value

ZIP 50621$214,700Iowa$208,000United States$332,700

Median gross rent

ZIP 50621$840/moIowa$972/moUnited States$1,413/mo

Owner-occupied homes

ZIP 5062178.2%*Iowa71.7%United States65.2%

Mean travel time to work

ZIP 5062119.6 minIowa19.8 minUnited States26.4 min

Worked from home

ZIP 506216.6%Iowa11.3%United States15.1%

All figures for ZIP 50621

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 50621 — ACS 2020–2024 5-year estimates
Measure	ZIP 50621	Margin of error	Iowa	United States
Total population	1,601	±162	3,210,507	334,922,499
Median age	47.8 yrs	±5.0 yrs	38.6 yrs	38.9 yrs
Households	656	±77	1,315,707	129,227,496
Median household income	$88,077	±$14,332	$75,059	$80,734
Per capita income	$45,311	±$4,093	$40,877	$44,673
Poverty rate	3.9%	±2.9 pts	11.1%	12.5%
Unemployment rate	0.9%	±1.0 pts	3.6%	5.2%
Bachelor's degree or higher	29.6%	±4.9 pts	31.4%	35.7%
Median home value	$214,700	±$21,202	$208,000	$332,700
Median gross rent	$840/mo	±$247	$972/mo	$1,413/mo
Owner-occupied homes	78.2%*	±12.9 pts	71.7%	65.2%
Mean travel time to work	19.6 min	±4.0 min	19.8 min	26.4 min
Worked from home	6.6%	±4.0 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 50621
Group	ZIP 50621	Iowa	United States
White alone, not Hispanic or Latino	93.6%	82.3%	57.4%
Black or African American alone, not Hispanic or Latino	1.6%	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	0.3%	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	1.4%	3.5%	4.3%
Hispanic or Latino (of any race)	3.1%	7.3%	19.3%

Where ZIP 50621 is

State: Iowa
Main county: Grundy County— also overlaps Marshall County
Largest overlapping place: Conrad (2% of the ZIP's land area)
Land area: 62.89 sq mi· about 25 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 Grundy County

50609 Grundy County, IA 50624 Grundy County, IA 50638 Grundy County, IA 50642 Grundy County, IA 50657 Morrison, IA 50669 Grundy County, IA 50673 Stout, IA 50680 Grundy County, IA

See every ZIP code in Iowa, or compare ZIP 50621 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.