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zipcodes.pro — STATE/MO/COUNTY/GRUNDY

Grundy County, MO ZIP codes

Grundy County, MO has 4 ZIP codes, in 4 towns: 64683, 64679, 64641 and 64652.

The county seat is Trenton.

ZIP codes
4
Towns
4
County seat
Trenton
County FIPS
29079
Population
9,787
Median household income
$51,975
Land area
435 sq mi

Grundy County ZIP codes by town

Trenton (county seat)
64683

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of Grundy County ZIP codes

64641646526467964683

The ZIP codes of Grundy County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Grundy County in numbers

About 9,787 people live in Grundy County, in 3,907 households, the 87th most populous of Missouri's 115 counties. The median household income is $51,975 a year, 26% below the Missouri median of $70,702 (US: $80,734). The median owner-occupied home is valued at $112,500 (51% below the Missouri median), and median gross rent is $696 a month. The median age is 40.6; 16.7% of adults 25 and over hold a bachelor's degree or higher (32.4% across Missouri); the average commute takes 18 minutes.

Population9,787Grundy9,787
Households3,907Grundy3,907
Median age40.6Grundy40.6Missouri39.0US 38.9
Median household income$51,975Grundy$51,975Missouri$70,702US $80,734
Median home value$112,500Grundy$112,500Missouri$230,300US $332,700
Median gross rent$696Grundy$696Missouri$1,033US $1,413
Bachelor's degree or higher16.7%Grundy16.7%Missouri32.4%US 35.7%
Mean commute17.8 minGrundy17.8 minMissouri23.5 minUS 26.4 min
Population density22 / sq miGrundy22 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Grundy County

Largest towns in Grundy County
TownZIP codesPopulation
Trenton 1 5,536
Spickard 1 253
Galt 1 203
Laredo 1 109

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Grundy County.

Not sure you are in Grundy County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Grundy County, with figures

ZIP codes in Grundy County
ZIP City Type Population Median income Median home
64641 Galt , MO Standard 625 $49,545 $137,500
64652 Laredo , MO Standard 346 $58,750 $176,400
64679 Spickard , MO Standard 921 $53,611 $118,100
64683 Trenton , MO Standard 7,631 $52,109 $110,000

Cite this page

zipcodes.pro. “Grundy County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mo/county/grundy

Underlying data is public domain or openly licensed — sources, vintages and licences.