Buying in Sullivan County, Missouri

Sullivan County at a glance

Sullivan County is one of 115 counties and county-equivalents in Missouri. Its county seat is Milan. Its 2024 Census Bureau population estimate is 5,750 across 648 square miles of land — about 9 people per square mile. In the FBI's 2024 reported-crime file, agencies here reported 19 offenses — 3.3 per 1,000 residents; the breakdown is below.

Records to check before you buy in Sullivan County

• Property record card — the Sullivan County assessor / appraisal office. Pull the parcel's assessed-value history, exemption status, and last sale. This is the file your future tax bill is calculated from, and it shows whether the current owner is enjoying exemptions you will not inherit. County government sits in Milan — start there for office locations and the parcel search.
• Deeds & liens — the Sullivan County recorder / land-records office. Read the deed chain, open liens, easements, and plat maps — the file a listing never mentions.
• Official flood determination. Check the exact parcel on FEMA's National Flood Hazard Layer — not the listing site's licensed model. Zone boundaries cut through streets; the house next door can be in a different zone. Sullivan County is the primary county for 7 ZIP codes in the Census Bureau's ZIP-to-county crosswalk — and zone lines ignore every one of them.
• The county's reported-crime record. In the FBI's 2024 file, agencies in Sullivan County reported 19 offenses — 3.3 per 1,000 residents; the largest single category was larceny-theft (10). The crime section below sets that beside the Missouri county median.
• Registry check. Run the address through Missouri Sex Offender Registry (Missouri State Highway Patrol, Criminal Justice Information Services Division) and note the counts within a mile — then check again the week you close.
• Permits & code history — the Sullivan building department. Open permits, expired permits, and code cases tell you whether the renovation in the photos was ever inspected. County permitting is run out of Milan.
• School assignment — the district office, not the listing. Only the district's own boundary lookup confirms which school an address is actually zoned for.

County list, land area and population: U.S. Census Bureau (population: 2024 PEP estimate). County seat and official website: Wikidata (CC0), checked 2026-11-04. Flood determinations: FEMA. Registry: Missouri.

Reported crime in Sullivan County — FBI 2024

Reported crime in Sullivan County in 2024 was overwhelmingly property crime: agencies logged 19 offenses, of which 17 were property offenses and 2 violent. The total rate is 3.3 per 1,000 residents (violent 34.8, property 295.7 per 100,000).

Inside Missouri, the median county in the same file recorded a violent-crime rate of 210 per 100,000 and a property-crime rate of 728 per 100,000 (medians computed from the FBI 2024 county file across 115 counties).

The largest reported categories were larceny-theft (10), burglary (4) and motor vehicle theft (3).

Coverage: 3 of 3 law-enforcement agencies assigned to this county reported at least one month of 2024 offense data to the FBI; 2 reported all 12 months. Counts are reported offenses only (FBI Return A / Arson master files), assigned whole to each agency's primary county; they are not adjusted for non-reporting agencies.

These are offenses reported to law enforcement — not convictions, and not a verdict on any street or address. A CurbFacts report pairs this county record with the ZIP-level picture for the specific address you are buying.

Source: FBI Crime Data Explorer, UCR Return A + Arson master files, data year 2024 (pulled 2026-11-04).

The Missouri rules that apply in Sullivan County

Traps researched for Missouri buyers: Odd-year reassessment can jump with no homestead cap; Meth-production disclosure is a specific statutory duty.

Read the full Missouri guide — disclosure standard, tax math, registry and flood

More Missouri counties

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