Hartman is a city in Johnson County, Arkansas, home to about 678 people across 1.6 square miles. Its ZIP code is 72840.
Homes sold for a median of $123 per square foot in the three months ending August 2026, a seller’s market.
Mostly Hartman; also Coal Hill
Each card is that ZIP code’s whole market, including any part outside Hartman. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Hartman’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Tulsa International Airport (TUL)137 miles away |
|---|---|
| Closer regional airport | Fort Smith Regional Airport (FSM)43 miles away |
| Nearest city of 250,000+ | Tulsa, OK137 miles away |
| Nearest city of 1 million+ | Dallas, TX257 miles away |
Straight-line distances from the center of Hartman; 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.
Hartman had 516 residents in the 2020 census, down 13% since 2000.
It’s the 262nd largest of 615 towns in Arkansas by population.
Johnson County grew from 17,448 residents in 1900 to 25,749 in 2020.
Johnson County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 92°F in summer, and winter lows average 29°F. About 51.1 inches of rain and melted snow fall in a typical year, with about 3 inches of snow.
Source: NOAA 1991–2020 climate normals, Clarksville 2n, AR weather station (9 miles away).
7,877 jobs at 413 businesses in Johnson County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
Nearest hospitals
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances.
Public schools here are run by WESTSIDE SCHOOL DISTRICT (Johnson). Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Westside Elementary SchoolHartman | Pre-K–5 | 279 | Public | 0.7 mi |
| Westside High SchoolHartman | 6–12 | 306 | Public | 2.3 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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Shares ZIP codes with Coal Hill.
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.