ZIP Codes of Newton County, MO

Population & People
Population & People
Total Population
42,495
Household Income
Household Income
Median Income
$60,836
Housing
Housing
Total Housing Units
17,017
Business & Economy
Business & Economy
Total Businesses
777
Employment
Employment
Employment Rate
57.13%
Education
Education
Bachelor's Degree+
20.07%
Source: U.S. Census ACS 2024 5-Year Estimates · rolled up across the 10 ZIPs in this county.
Data Last Updated: June 1, 2026
ZIP Codes:10 ZIP Codes (7 Standard, 3 PO Box, 0 Unique) [See All]
Area Code:417
Timezone:Central (GMT -06:00)
Local Time:2:12:44 PM
Population:42,495 [See All]
FIPS:29145
CBSA:Joplin, MO-KS
Land Area:530 sq mi
Water Area:1 sq mi
Coordinates:36.8799, -94.3250
Quick Link:
https://www.zip-codes.com/county/mo-newton.asp
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Missouri's #28 most populous county
42,495 residents across 10 ZIPs — #28 of 116 Missouri counties.

Standout ZIPs in this County


Most Populous
Neosho · 25,126 people
59.1% of county total
Highest Income
Diamond · $65,000 median
1.1× county average
Largest Land Area
Neosho · 206.2 sq mi
Spans the most ground
Fastest Growth
Neosho · 6.0% (10-yr)
23,702 → 25,126 residents
Most Educated
Diamond · 23.2% bachelor's+
550 of 2,368 adults 25+

Things worth knowing about Newton County


42,495 residents live across 10 ZIPs covering 530 sq mi, served by 10 distinct USPS-recognized cities.

Population moved from 41,734 to 42,495 from 2014 to 2024 — a +1.8% change. 5 ZIPs gained residents, 3 lost.

The county's wealthiest ZIP 64840 (Diamond, $65,000 median) and poorest ZIP 64867 (Stella, $55,474) are 21.4 miles apart — a 1.2× income gap across local geography.

Median home values vary 2.5× across this county — from $126,900 in 64844 (Granby) to $314,100 in 64858 (Racine).

Density varies 250× across the county — from 19 people/sq mi in 64867 (Stella) to 4,688 in 64858 (Racine).

Educational attainment ranges from 12.8% bachelor's+ in 64865 (Seneca) to 48.1% in 64858 (Racine) — the breadth of educational profiles across the area.

Within Missouri, this is the #28 most populous of 116 counties and ranks #61 for median household income .

Weighted by population, the typical household earns about $62,816 across the county — reflecting what a typical resident sees, not a simple ZIP average.

20.1% of adults age 25+ hold a bachelor's degree or higher (5,629 of 28,050 reporting).

7 Standard delivery, 3 PO Box only, 0 single-entity Unique ZIPs serve this county.

Stories about Newton County


Big & sparse

A frontier county — vast land area with only a few residents per square mile. Daily life looks very different here than in the country's denser counties.

Total area
530
square miles
Avg density
80.2
people per sq mi
Population
42,495
across 10 ZIPs
Neosho
206.2 sq mi
25,126 residents
Seneca
75.0 sq mi
5,692 residents
Granby
62.7 sq mi
4,796 residents

All ZIP Codes in Newton County


ZIPCityTypePopulationMedian IncomeArea (sq mi)10-yr Growth
64850NeoshoStandard25,126$63,469206.26.0%
64865SenecaStandard5,692$60,84675.0-4.7%
64844GranbyStandard4,796$63,38262.72.4%
64840DiamondStandard3,325$65,00050.85.1%
64866Stark CityStandard1,113$59,71253.8-32.9%
64867StellaStandard1,082$55,47457.7-41.1%
64842FairviewStandard775$57,96923.613.1%
64858RacinePO Box5860.11853.3%
64864SaginawPO Box0.0
64853NewtoniaPO Box0.0

Adjacent & Nearby Counties