Seneca is a city in Newton County, Missouri, home to about 1,906 people across 2.6 square miles. Its ZIP code is 64865.
Homes sold for a median of $111 per square foot in the three months ending August 2026, a balanced market.
Each card is that ZIP code’s whole market, including any part outside Seneca. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
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| Nearest major airport | Tulsa International Airport (TUL)85 miles away |
|---|---|
| Closer regional airport | Joplin Regional Airport (JLN)22 miles away |
| Nearest city of 250,000+ | Tulsa, OK88 miles away |
| Nearest city of 1 million+ | Dallas, TX306 miles away |
Straight-line distances from the center of Seneca; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Seneca had 2,230 residents in the 2020 census, up 4% since 2000.
It’s the 279th largest of 1,060 towns in Missouri by population.
Newton County grew from 27,001 residents in 1900 to 58,648 in 2020.
Newton County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 90°F in summer, and winter lows average 25°F. About 50 inches of rain and melted snow fall in a typical year, with about 8 inches of snow.
Source: NOAA 1991–2020 climate normals, Neosho, MO weather station (12 miles away).
22,540 jobs at 1,251 businesses in Newton County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
11 doctors and other health care providers list an office in Seneca.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Specialist doctors | 1 |
| Dentists | 3 |
| Mental health providers | 1 |
| Physical and occupational therapists | 3 |
| Chiropractors | 2 |
| Pharmacies | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Libraries
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Seneca R-Vii. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Seneca Early Childhood SchoolSeneca | Pre-K | 84 | Public | 2.1 mi |
| Seneca Elem.Seneca | Pre-K–3 | 417 | Public | 1.4 mi |
| Seneca Intermediate SchoolSeneca | 4–6 | 305 | Public | 1.4 mi |
| Seneca Junior HighSeneca | 7–8 | 231 | Public | 1.7 mi |
| Seneca HighSeneca | 9–12 | 450 | Public | 1.6 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.