Grundy County, Missouri Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 87th-largest in Missouri
The population of Grundy County, Missouri is 9,822 as of the 2023 American Community Survey, making it the 87th-largest county in Missouri. The median household income is $53,839, the median home value is $107,000, and the median age is 39.7.
The population of Grundy County has declined 4.8% since 2010 (10,254 → 9,766), a -0.35% annualized rate.
9,822
Population
-0.35%
Annual growth
23
People / sq mi
$53,839
Median Income
$107,000
Median Home Value
Grundy County covers 435 sq mi of land at 22.6 people per square mile.
About Grundy County, MO
Grundy County is a county in Missouri with a population of 9,822. It ranks #87 among counties in Missouri by population. The median age is 39.7, in line with the national median. The population is 49.0% male and 51.0% female.
The median household income in Grundy County is $53,839, below the US median of $74,580. 11.1% of residents live below the federal poverty level. Home values sit at a median of $107,000, with monthly rent averaging $679. The homeownership rate of 69.3% is higher than the national rate of 64.8%.
Educational attainment in Grundy County reflects 15.9% of adults 25 and older holding a bachelor's degree or higher, below the national average of 34.3%. Roughly 6.3% of workers primarily work from home, below the national work-from-home rate of 14.2%. The average commute is 17.0 minutes each way.
Grundy County Population History (2010-2024)
The county of Grundy County had a population of 10,254 in 2010 and 9,766 in 2024, a -4.8% growth over 14 years. The peak was 10,346 in 2013. Average annual growth rate: -0.34%.
9,766
Population (2024)
10,254
Population (2010)
10,346
Peak (2013)
-0.34%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,254 |
| 2011 | 10,254 |
| 2012 | 10,333 |
| 2013 | 10,346 |
| 2014 | 10,183 |
| 2015 | 10,033 |
| 2016 | 10,107 |
| 2017 | 9,990 |
| 2018 | 9,949 |
| 2019 | 9,780 |
| 2020 | 9,757 |
| 2021 | 9,762 |
| 2022 | 9,828 |
| 2023 | 9,807 |
| 2024 | 9,766 |
Race & Ethnicity
| White | 93.6% |
| Black or African American | 0.5% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 1.1% |
| Two or More Races | 0.0% |
Age & Sex
39.7
Median Age
51.0%
Female
49.0%
Male
21.8%
Age 65+
Age Distribution
Children (under 15): 21.6% · Seniors (65+): 21.8%
Income & Poverty
| Median household income | $53,839$-15,081 vs state |
| Mean household income | $76,823 |
| Per-capita income | $30,705 |
| Poverty rate | 11.1%+2.7% vs state |
| Unemployment rate | 1.5% |
| Employment-to-population | 52.5% |
Top Industries by Employment
The largest employment sector in Grundy County is professional & business services, accounting for 21.6% of workers.
How residents commute
0.5%
Drive alone
4.6%
Carpool
78.8%
Public transit
6.3%
Work from home
17.0 min
Avg commute
Housing
$107,000$-108,600 vs state
Median home value
$679
Median rent
69.3%
Homeownership rate
4,851
Total housing units
78.9%
Occupied
21.1%
Vacant
30.7%
Renter-occupied
Social & access
83.0%
With health insurance
84.4%
With broadband internet
22.1%
Foreign-born
7.2%
Veterans (18+)
13.1%
With a disability
94.8%
Speak language other than English at home
Education
85.4%
High School+
15.9%
Bachelor's+
Largest cities in Missouri
Other counties in Missouri
Part of Missouri
Metro areas in Missouri
County rankings
Frequently Asked Questions
Grundy County, Missouri has a population of 9,822 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 87th-largest county in Missouri. Population density is 23 people per square mile.
The population of Grundy County has declined 4.8% since 2010 (10,254 → 9,766), a -0.35% annualized rate.
The median household income in Grundy County, Missouri is $53,839, with mean (average) household income of $76,823 and per-capita income of $30,705. 11.1% of residents live below the federal poverty level.
In Grundy County, the largest racial and ethnic groups are White (93.6%), Hispanic or Latino (1.1%), Black or African American (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Grundy County, Missouri is 39.7 years. Residents are 51.0% female and 49.0% male.
The median home value in Grundy County is $107,000 and median monthly rent is $679. 69.3% of occupied housing units are owner-occupied. The county has 4,851 total housing units, 21.1% of which are vacant.
The largest employment sector in Grundy County, Missouri is professional, scientific, and management services, employing 21.6% of workers. The unemployment rate is 1.5%.
Kansas City is among the largest cities associated with Grundy County, Missouri, with a population of 508,233.
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Statewide data for Missouri
Population, race, income, age, and trends across Missouri
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.