County · Missouri

Grundy County, Missouri

Grundy County, Missouri. Grundy County had 9,744 residents in 2025 by the Census Bureau's estimate, down 0.7% since 2020, while Missouri grew 1.9%. It holds 21 places (6 cities, villages and boroughs, 13 towns and townships and 2 census-designated) and 4 census tracts. GEOID 29079.

Residents, July 2025 estimate

9,744

Census Bureau estimate (no margin published)
2020 Census count: 9,808 · ACS 2020-2024: 9,787

Median household income

$51,975

±$3,908 (90% margin)
Missouri: $70,702

Median home value

$112,500

±$10,773 (90% margin)
Missouri: $230,300

Median gross rent

$696

±$72 (90% margin)
Missouri: $1,033

How many people live in Grundy County, and is it growing?

The 2020 Census counted 9,808 residents in Grundy County. The Census Bureau estimates 9,744 for July 1, 2025, down 0.7% since 2020, while Missouri grew 1.9%. The 2020-2024 American Community Survey puts the population at 9,787 over 435 square miles of land.

July 2020→2021 +1 (9,765)
2021→2022 +58 (9,823)
2022→2023 −15 (9,808)
2023→2024 −59 (9,749)
2024→2025 −5 (9,744)

Grundy County in Missouri. Boundaries: Census Bureau 2024.

Counts, ACS 2020-2024 5-year estimates, with the change from 2015-2019
Measure	Grundy County	Missouri	Change since 2015-2019
Total population	9,787	6,191,814	−205
Households	3,907±184	2,508,227	no clear change
Average household size	2.43±0.11	2.40	no clear change
Housing units	4,834±24	2,825,287	−164

Grundy County's population since 2000

From 10,432 in 2000 to 9,744 in 2025: down 6.6%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.

2000 Census 10,432
2005 (estimate) 10,280
2010 Census 10,261
2015 (estimate) 10,033
2020 Census 9,808
2025 (estimate) 9,744

Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov

What cities and towns are in Grundy County?

Grundy County holds 21 places: 6 cities, villages and boroughs (incorporated places), 13 towns and townships (county subdivisions with their own government) and 2 census-designated places. The largest is Trenton Township with 5,964 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.

Places in Grundy County, ACS 2020-2024 5-year estimates. Ring: estimate with a coefficient of variation over 40%.

Trenton Township	township	6,013	5,988±24	$50,557	$102,900	17.1%	100%
Trenton	city	5,609	5,536±118	$50,015	$99,500	18.1%	100%
Lincoln Township, Grundy County	township	605	496±91	$83,750	$201,100	11.3%	100%
Madison Township, Grundy CountyGEOID 2907945380	township	586	398±136	$25,000	$77,200	31.2%	100%
Franklin TownshipGEOID 2907925606	township	498	505±171	$42,875	$76,700	13.7%	100%
Jefferson Township, Grundy CountyGEOID 2907936800	township	482	537±128	$96,607	$320,500	19.0%	100%
Liberty Township, Grundy County	township	382	461±112	$47,083	$128,600	26.5%	100%
Wilson Township, Grundy County	township	354	285±72	$44,167	$161,500	10.9%	100%
Marion Township, Grundy CountyGEOID 2907946028	township	260	329±100	$48,864	$185,300	19.7%	100%
SpickardGEOID 2969464	city	222	253±100	$25,938	$32,100	26.1%	100%
Galt	city	168	203±78	$24,531	$60,000	22.7%	100%
Leisure LakeGEOID 2941417	CDP	166	175±79	$16,817	$74,800	49.1%	100%
LaredoGEOID 2940736	city	156	109±49	$45,000	$78,300	25.7%	100%
Washington Township, Grundy CountyGEOID 2907977470	township	148	317±117	$72,188	$237,500	35.3%	100%
Myers TownshipGEOID 2907950978	township	132	75±28	$77,656	$175,000	21.3%	100%
Taylor TownshipGEOID 2907972484	township	129	117±52	$52,188	$95,000	0.9%	100%
Jackson Township, Grundy CountyGEOID 2907935810	township	122	140±42	$103,750	$237,500	0.7%	100%
Harrison Township, Grundy CountyGEOID 2907930520	township	97	139±59	$112,000	not published	0.0%	100%
EdinburgGEOID 2921340	CDP	84	63±56	$43,750	$75,800	44.4%	100%
BrimsonGEOID 2908470	village	50	81±44	$63,750	$69,000	1.2%	100%
TindallGEOID 2973348	town	46	74±36	$39,000	$67,100	36.5%	100%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov

Who lives in Grundy County?

The median resident of Grundy County is 40.6 years old; 25.9% are under 18 and 22.5% are 65 or older. The largest group is non-Hispanic white residents at 92.1%, then non-Hispanic residents of two or more races at 3.4%. 1.2% of residents were born outside the United States.

Age, origin and education, ACS 2020-2024 5-year estimates. Race groups are non-Hispanic; Hispanic includes any race.
Measure	Grundy County	Missouri	Change since 2015-2019
Median age	40.6±1.4	39.0	no clear change
Under 18 years	25.9%±0.7 pts	22.3%	–
65 years and over	22.5%±0.5 pts	17.9%	–
Hispanic or Latino (any race)	2.8%	5.2%	+0.4 pts
White alone, not Hispanic	92.1%±0.9 pts	76.3%	−2.0 pts
Black or African American alone, not Hispanic	0.4%±0.3 pts	10.9%	–
Asian alone, not Hispanic	0.7%±0.4 pts	2.1%	–
American Indian and Alaska Native alone, not Hispanic	0.2%±0.2 pts	0.2%	–
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0.0%±0.4 pts	0.1%	–
Two or more races, not Hispanic	3.4%±1.2 pts	4.8%	–
Some other race alone, not Hispanic	0.4%±0.5 pts	0.4%	–
Born outside the United States	1.2%±0.6 pts	4.5%	−1.5 pts
Speak a language other than English at home (age 5+)	5.0%±1.3 pts	6.7%	–
Civilian veterans (age 18+)	7.3%±1.4 pts	7.3%	–
With a disability	13.6%±2.0 pts	14.9%	–
No health insurance coverage	16.2%±2.9 pts	8.8%	no clear change
High school graduate or higher (age 25+)	86.7%±2.4 pts	91.9%	–
Bachelor's degree or higher (age 25+)	16.7%±2.4 pts	32.4%	no clear change
Graduate or professional degree (age 25+)	5.7%±1.3 pts	12.6%	–
Moved from another state in the past year	1.9%±0.9 pts	2.5%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov

What do households in Grundy County earn?

Half of Grundy County's 3,907 households earn less than $51,975 a year (±$3,908), against $70,702 in Missouri. In 2015-2019 it was $56,112 in 2024 dollars; the margins of error cannot tell the two periods apart. 17.6% of residents live below the poverty line.

Income and poverty in 2024 dollars, ACS 2020-2024 5-year estimates
Measure	Grundy County	Missouri	Change since 2015-2019
Median household income	$51,975±$3,908	$70,702	no clear change
Mean household income	$75,460±$11,199	$96,247	–
Per capita income	$31,335±$4,438	$39,695	no clear change
People below the poverty line	17.6%±3.3 pts	12.6%	no clear change
Children under 18 below the poverty line	18.1%±6.5 pts	15.8%	no clear change
Households receiving SNAP	11.7%±2.9 pts	9.8%	–
Households with a broadband subscription	77.6%±3.9 pts	89.3%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What does housing cost in Grundy County?

Owners occupy 69.7% of Grundy County's occupied homes and renters 30.3%. The median owner-occupied home is valued at $112,500 by its owner (±$10,773). The median renter pays $696 a month including utilities, and 31.8% of renters pay 35% or more of their income on rent.

Housing, ACS 2020-2024 5-year estimates
Measure	Grundy County	Missouri	Change since 2015-2019
Median home value (owner-occupied)	$112,500±$10,773	$230,300	no clear change
Median gross rent	$696±$72	$1,033	no clear change
Renters paying 35% or more of income on rent	31.8%±9.9 pts	36.6%	no clear change
Median monthly owner costs, with a mortgage	$1,074±$90	$1,524	–
Owner-occupied homes	69.7%±4.0 pts	68.1%	no clear change
Housing units	4,834±24	2,825,287	−164
Homeowner vacancy rate	0.4%±0.5 pts	0.9%	–
Rental vacancy rate	6.9%±5.7 pts	5.0%	–
Single-family detached homes	80.5%±3.2 pts	70.5%	–
Mobile homes	5.4%±1.6 pts	5.2%	–
Built 2020 or later	1.0%±0.5 pts	1.6%	–
Built 1939 or earlier	26.3%±3.5 pts	13.3%	–

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov

How many new homes is Grundy County building?

Builders took permits for 3 new housing units across Grundy County in 2025 (3 single-family), 0.3 per 1,000 residents.

2019 4 units
2020 4 units
2021 5 units
2022 4 units
2023 0 units
2024 2 units
2025 3 units

Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey

How do people in Grundy County get to work?

79.8% of Grundy County's workers drive alone and 5.3% work from home. The average trip to work takes 17.8 minutes. The unemployment rate in 2020-2024 averaged 3.2%.

Work and commuting, ACS 2020-2024 5-year estimates
Measure	Grundy County	Missouri	Change since 2015-2019
In the labor force (age 16+)	54.5%±2.5 pts	63.1%	–
Unemployment rate	3.2%±1.8 pts	4.0%	no clear change
Drove alone to work	79.8%±3.6 pts	74.8%	–
Carpooled	7.9%±2.5 pts	8.1%	–
Public transportation	0.0%±0.1 pts	0.8%	–
Walked	5.0%±2.3 pts	1.8%	–
Worked from home	5.3%±1.4 pts	13.0%	−2.8 pts
Mean travel time to work	17.8 min±1.3	23.5 min	no clear change

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov

What are Grundy County's census tracts?

Grundy County is divided into 4 census tracts. Among those with a reliable estimate, median household income runs from $46,573 (Tract 9604) to $59,766 (Tract 9601).

Census tracts of Grundy County, ACS 2020-2024 5-year estimates; sort by any column

Tract 960129079960100	Laredo (9%)	2,084	2,075±187	$59,766	$177,700	$773	14.5%
Tract 960229079960200	Spickard (11%)	2,069	2,128±179	$53,958	$106,800	not published	19.3%
Tract 960329079960300	Trenton (93%)	2,244	2,434±256	$54,048	$79,700	$794	13.1%
Tract 960429079960400	Trenton (94%)	3,411	3,150±275	$46,573	$109,300	$651	22.0%

Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov

How does Grundy County compare with Missouri's other counties?

Grundy County's rank among Missouri's counties with a reliable estimate (1 = highest)
Measure	Rank
Population	87th of 115
Growth 2020-2025	91st of 115
Residents per square mile	72nd of 115
Median household income	93rd of 115
Median home value	104th of 115
Median gross rent	74th of 115
Poverty rate	29th of 115
Bachelor's degree or higher	71st of 115
Median age	64th of 115

Every county in Missouri

Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed

How these figures are made: methodology and release checks · reading a margin of error · every state · corrections

Not on this page: crime, weather and schools for Grundy County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.