• county
  • FIPS 29079
  • Largest town: Trenton

Grundy County, Missouri

Grundy County had 9,766 residents in the Census Vintage 2024 estimate, on 435.3 square miles of land. It ranks 88th of 115 in Missouri by population and 99th by land area.

Population
9,766
#88 of 115 in Missouri · #2,430 in US
Area
435.3 sq mi
#99 of 115 in Missouri · #2,329 in US
Density
22 / sq mi
#72 of 115 in Missouri · #2,146 in US
Median household income
$48,491
#99 of 115 in Missouri · #2,807 in US

Census Vintage 2024 estimates · SAIPE 2023 income · 2024 Gazetteer land area

Grundy County within Missouri. Pin: Jefferson City.

Measure from here

Tools and pages that start from Grundy County

Grundy County population, land area and income

Grundy County had 9,766 residents in the Census Vintage 2024 estimate, on 435.3 square miles of land. It ranks 88th of 115 in Missouri by population and 99th by land area. That works out to 22.4 people per square mile, below the US average of 96.3, and below the national county median.

The median county-equivalent in Missouri has 19,100 residents; Grundy County is somewhat smaller.

Its SAIPE 2023 median household income of $48,491 is in the bottom quarter among 3,143 counties with an estimate.

National rank among 3,144

Population

9,766

3144th1st

2430th of 3,144 (US)

Land area

435 sq mi

3144th1st

2329th of 3,144 (US)

Density

22.4 / sq mi

3144th1st

2146th of 3,144 (US)

Median household income

$48,491

3143rd1st

2807th of 3,143 (US)

Rank within Missouri (115)

Population

9,766

115th1st

88th of 115 (MO)

Land area

435 sq mi

115th1st

99th of 115 (MO)

Density

22.4 / sq mi

115th1st

72nd of 115 (MO)

Median household income

$48,491

115th1st

99th of 115 (MO)

How Grundy County's population changed since 2020

Grundy County gained 9 residents between the July 2020 and July 2024 estimates, a rise of 0.1%. That ranks 79th of 115 in Missouri for growth. The median Missouri county changed by +1.4%, and the state as a whole by +1.5%.

Since the April 2020 estimates base, Grundy County recorded 573 births and 661 deaths, a natural change of -88. Net international migration added +49 and net domestic migration, people moving to or from other US counties, came to -5. The largest single component was natural change, which removed 88 people.

9,75720209,76220219,82820229,80720239,7662024
Census Vintage 2024 county estimates for July 1 of each year. The axis starts above zero so year-to-year changes are visible.

Components of change, April 2020 to July 2024

Births
573
Deaths
661
Net international migration
+49
Net domestic migration
-5
Change, July 2023 to July 2024
-41

Where Grundy County is

The Census internal point of Grundy County is at 40.112500, -93.565100. It sits in UTM zone 15N. The map shades Missouri's 115 county-equivalents by population change from 2020 to 2024, darker for faster growth, with Grundy County outlined. Dots are towns of 1,000+ people with residents in it.

Pettis County: +1.8%Henry County: +2.7%Texas County: +5.7%Madison County: +1.8%St. Louis city: -6.9%Cole County: +1.3%Washington County: +0.6%Macon County: -0.1%Barton County: +0.8%Grundy County: +0.1%Cedar County: +5.7%Randolph County: -1.6%Ray County: +0.3%Caldwell County: +2.0%Benton County: +6.1%Douglas County: +5.9%Shannon County: +3.4%Dade County: +0.5%Wright County: +7.1%Gentry County: +2.6%Lawrence County: +3.0%Cooper County: +2.9%Hickory County: +5.6%Moniteau County: +0.5%Dent County: +2.3%Monroe County: +2.3%Maries County: +0.7%Bollinger County: +0.5%Clinton County: +2.4%Knox County: +0.0%Webster County: +7.8%Harrison County: +0.4%Pulaski County: -0.1%Adair County: +1.5%Warren County: +7.7%Daviess County: +1.3%Audrain County: -1.9%Howard County: -0.1%Linn County: +0.4%Saline County: -0.1%Miller County: +3.6%Dallas County: +4.3%Morgan County: +6.7%New Madrid County: -6.8%Newton County: +4.8%Oregon County: +1.0%Franklin County: +2.3%Greene County: +2.9%Ralls County: +1.4%Lafayette County: +1.4%Livingston County: +4.8%McDonald County: +3.3%Barry County: +3.1%Cape Girardeau County: +2.2%Carroll County: -0.6%Christian County: +7.6%Vernon County: +0.6%Carter County: +3.0%Andrew County: -0.1%Jasper County: +2.9%Worth County: -4.9%Lincoln County: +10.1%Marion County: -0.2%Holt County: +1.2%Howell County: +2.4%St. Francois County: +1.6%Chariton County: +0.1%Butler County: -0.6%Iron County: -1.0%Perry County: +0.7%Cass County: +5.3%St. Louis County: -1.0%Dunklin County: -4.3%Wayne County: -1.1%Ozark County: +6.7%Laclede County: +1.9%Reynolds County: -2.5%Lewis County: -1.9%Taney County: +1.2%Ripley County: +0.4%Ste. Genevieve County: +0.4%Scotland County: -0.1%Putnam County: -3.1%Schuyler County: +1.5%Shelby County: -2.8%Boone County: +4.4%Mercer County: -1.7%Platte County: +5.6%Camden County: +3.1%Bates County: +2.1%Johnson County: +3.4%Sullivan County: -3.8%Atchison County: -3.1%Scott County: -0.2%Montgomery County: +2.0%Jefferson County: +2.2%Clark County: -0.5%Callaway County: +1.8%St. Clair County: +5.4%Buchanan County: -1.1%Pemiscot County: -7.6%Polk County: +4.6%Phelps County: +2.5%Stone County: +4.6%Osage County: +1.7%Clay County: +3.6%Nodaway County: -2.4%Crawford County: -1.0%Jackson County: +1.4%St. Charles County: +4.3%Mississippi County: -3.1%Pike County: +3.1%Stoddard County: -0.7%Gasconade County: -0.7%DeKalb County: -14.8%
Change 2020 to 2024
  1. < -0.7%
  2. < +0.5%
  3. < +2.0%
  4. < +3.6%
  5. ≥ +3.6%
no data

Orange pin: Grundy County internal point. Dark pin: Jefferson City.

Internal point

Decimal
40.112500, -93.565100
DMS
40°06'45.00"N 93°33'54.36"W
UTM
15N 451842.4E 4440396.8N
Geohash
9zjkny7bp
Plus code
86G84C7M+2X

Towns in Grundy County

One incorporated place of 1,000+ people has residents in Grundy County, 5,588 people together, or 57% of the county. Each figure counts only the part of the town inside Grundy County; towns marked "part" extend into another county. The largest is Trenton with 5,588.

  1. 01Trenton5,588
Census Vintage 2024 subcounty estimates, county parts of incorporated places (SUMLEV 157).

Counties bordering Grundy County

The Census 2024 county adjacency file lists 6 neighbors for Grundy County. The most populous is Livingston County, MO, with 14,658 residents. Distances run between Census internal points in a straight line.

Distance to Jefferson City and the nearest big city

Jefferson City is 129.5 miles SE of Grundy County's internal point in a straight line. The nearest place of 100,000 or more is Independence, MO (population 121,629), 82.4 miles away. The nearest place of 10,000 or more is Kirksville, MO (population 17,841), 52.6 miles away.

Grundy County FIPS code

The FIPS code of Grundy County is 29079: state code 29 for Missouri plus county code 079. Use it as text, with the leading zero, when joining Census, BLS, or CDC county tables. SAIPE lists its 2023 median household income as $48,491.

Questions people ask

What is the population of Grundy County, Missouri?

The Census Vintage 2024 estimate for July 1, 2024 is 9,766. That is up 9 people (0.1%) from the July 2020 estimate of 9,757.

What is the FIPS code of Grundy County?

29079. The first two digits (29) are Missouri; the last three (079) identify the county.

What is the largest town in Grundy County?

Trenton, with 5,588 residents inside Grundy County in 2024.

Which counties border Grundy County?

6 county-equivalents border it in the Census 2024 adjacency file: Livingston County, MO; Linn County, MO; Daviess County, MO; Harrison County, MO; Sullivan County, MO; Mercer County, MO.

Sources and data as of

Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.

  1. 01Census Vintage 2024 county population estimates
  2. 02Census 2024 Gazetteer, counties
  3. 03Census SAIPE 2023 state and county estimates
  4. 04Census Vintage 2024 subcounty population estimates
  5. 05Census 2024 county adjacency file
  6. 06Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.