ZIP Code Tabulation Area · Missouri

ZIP Code 63531: Knox County, MO

ZIP Code 63531 (Knox County, Missouri) has an estimated 393 residents in 104 households. The median household income is $86,250, the median home value is $166,700 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. 5 figures for this ZIP (median age, household income, home value, owner-occupied, 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

393

Margin of error ±161

Median household income

$86,250*

Margin of error ±$82,699· estimate has a large margin of error

Median home value

$166,700*

Margin of error ±$120,228· estimate has a large margin of error

Median gross rent

—

Margin of error not available

Median age

33.4 yrs*

Margin of error ±22.5 yrs· estimate has a large margin of error

Mean travel time to work

14.7 min*

Margin of error ±11.1 min· estimate has a large margin of error

How ZIP 63531 compares with Missouri 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 6353133.4 yrs*Missouri39.0 yrsUnited States38.9 yrs

Median household income

ZIP 63531$86,250*Missouri$70,702United States$80,734

Per capita income

ZIP 63531$29,083Missouri$39,695United States$44,673

Poverty rate

ZIP 635315.9%Missouri12.6%United States12.5%

Unemployment rate

ZIP 635310.0%Missouri4.0%United States5.2%

Bachelor's degree or higher

ZIP 635317.2%Missouri32.4%United States35.7%

Median home value

ZIP 63531$166,700*Missouri$230,300United States$332,700

Median gross rent

ZIP 63531—Missouri$1,033/moUnited States$1,413/mo

Owner-occupied homes

ZIP 6353184.6%*Missouri68.1%United States65.2%

Mean travel time to work

ZIP 6353114.7 min*Missouri23.5 minUnited States26.4 min

Worked from home

ZIP 635313.2%Missouri13.0%United States15.1%

All figures for ZIP 63531

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 63531 — ACS 2020–2024 5-year estimates
Measure	ZIP 63531	Margin of error	Missouri	United States
Total population	393	±161	6,191,814	334,922,499
Median age	33.4 yrs*	±22.5 yrs	39.0 yrs	38.9 yrs
Households	104	±42	2,508,227	129,227,496
Median household income	$86,250*	±$82,699	$70,702	$80,734
Per capita income	$29,083	±$8,584	$39,695	$44,673
Poverty rate	5.9%	±4.8 pts	12.6%	12.5%
Unemployment rate	0.0%	±7.7 pts	4.0%	5.2%
Bachelor's degree or higher	7.2%	±9.4 pts	32.4%	35.7%
Median home value	$166,700*	±$120,228	$230,300	$332,700
Median gross rent	—	—	$1,033/mo	$1,413/mo
Owner-occupied homes	84.6%*	±21.5 pts	68.1%	65.2%
Mean travel time to work	14.7 min*	±11.1 min	23.5 min	26.4 min
Worked from home	3.2%	±4.9 pts	13.0%	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 63531
Group	ZIP 63531	Missouri	United States
White alone, not Hispanic or Latino	81.9%	76.3%	57.4%
Black or African American alone, not Hispanic or Latino	0.0%	10.9%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.2%	0.5%
Asian alone, not Hispanic or Latino	0.5%	2.1%	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%	0.4%	0.6%
Two or more races, not Hispanic or Latino	16.0%	4.8%	4.3%
Hispanic or Latino (of any race)	1.5%	5.2%	19.3%

Where ZIP 63531 is

State: Missouri
Main county: Knox County— also overlaps Scotland County
Largest overlapping place: Baring (less than 1% of the ZIP's land area)
Land area: 82.81 sq mi· about 5 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 Knox County

63446 Knox County, MO 63458 Knox County, MO 63460 Knox County, MO 63537 Knox County, MO 63547 Knox County, MO 63563 Knox County, MO

See every ZIP code in Missouri, or compare ZIP 63531 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.