Washtenaw County contains Ann Arbor and is home to the University of Michigan — one of the largest universities in the United States with roughly 48,000 enrolled students. With roughly 375,000 residents, Washtenaw County sits in the 22nd Judicial Circuit. Ann Arbor's combination of a world-class research university, a major healthcare system (Michigan Medicine), and a growing technology sector creates a highly educated, relatively transient professional population — very different in character from neighboring Wayne, Oakland, and Macomb counties.
The defining practical consideration for Washtenaw County searches: the University of Michigan creates significant address churn. Former UM students who graduated and relocated may still have Ann Arbor addresses in databases reflecting their time in university housing or student apartments. ICHAT is the correct starting point for Washtenaw County criminal history. For the broader Michigan context, see our Michigan state guide.
Key takeaways
- Washtenaw County (pop. est. 375,000 — U.S. Census Bureau, 2023 ACS) contains Ann Arbor and the University of Michigan — student address churn is the primary practical search complication.
- ICHAT covers all 83 Michigan counties including Washtenaw in one statewide search — the correct starting point for criminal history.
- Former UM student addresses in databases are often historical — verify current residence before treating any Ann Arbor address for someone who graduated more than two years ago.
- Ypsilanti (Eastern Michigan University) adds a second university-related address-churn component in eastern Washtenaw County.
Washtenaw County quick facts
- Population estimate (2023): approximately 375,000 (U.S. Census Bureau, 2023 ACS)
- County seat: Ann Arbor
- Largest city: Ann Arbor
- State: Michigan
- Primary courts: Washtenaw County Circuit Court (22nd Judicial Circuit) and district courts by municipality
Population estimates from the U.S. Census Bureau.
How record searches work in Washtenaw County
Washtenaw County searches begin with ICHAT for statewide criminal history. OTIS supplements ICHAT for current corrections supervision with free photo identification. MiCourt provides online access to Washtenaw County Circuit Court records for civil, family, and felony criminal matters. Ann Arbor's 15th District Court handles misdemeanors and minor civil matters for the city separately from Circuit Court.
For any former UM student address, confirm whether the address represents current residence or a historical student-era address. Ann Arbor dormitory addresses, fraternity/sorority house addresses, and student apartment cluster addresses in the campus vicinity should be treated as potentially historical for anyone who graduated more than two years ago. Our guide on finding someone by name and city covers how to use Ann Arbor as a city anchor.
Types of records available in Washtenaw County
- Circuit court records — MiCourt online access for Washtenaw County Circuit Court (22nd Judicial Circuit)
- Ann Arbor 15th District Court — separate online access for Ann Arbor city misdemeanor and civil matters
- Property records — Washtenaw County Register of Deeds online portal (well-maintained)
- Vital records — Washtenaw County Clerk for marriage licenses; Michigan MDHHS statewide index from 1867
- Statewide criminal history — ICHAT (fee-based, all 83 counties)
- Current corrections supervision — OTIS (free, includes photos)
Crime statistics and public-safety context
Washtenaw County has crime rates below the Michigan state average overall, but Ann Arbor itself has a somewhat elevated property crime rate relative to comparable university cities — a pattern common near large research universities with dense student populations. Ypsilanti has a higher violent crime rate than Ann Arbor, reflecting different economic demographics in eastern Washtenaw County. Source: Michigan State Police, Michigan Incident Crime Reporting (MICR) 2022.
Major cities in Washtenaw County
Ann Arbor
Ann Arbor (est. 122,925 — U.S. Census Bureau, 2023 ACS) is the county seat and home to both the University of Michigan main campus and Michigan Medicine (the UM health system). Ann Arbor has a highly educated, relatively transient professional and academic population. The 15th District Court handles local misdemeanor and civil matters for the city. For anyone with a UM-adjacent Ann Arbor address — zip codes 48109, 48104, 48105 — verify whether the address is current before treating it as a primary residence.
Ypsilanti
Ypsilanti (est. 21,000 — U.S. Census Bureau, 2023 ACS) is in eastern Washtenaw County and home to Eastern Michigan University (enrollment ~15,000). Ypsilanti has a significantly different demographic and economic character from Ann Arbor — lower median income, higher crime rates, and a larger working-class population. Ypsilanti has its own district court for local matters. EMU creates additional student address churn in Ypsilanti separate from the UM churn in Ann Arbor.
Saline and Dexter
Saline (est. 9,000) and Dexter (est. 4,500) are smaller Washtenaw County communities with stable, lower-mobility residential populations. Both route to Washtenaw County Circuit Court for major matters. These communities have more conventional suburban address patterns than the university cities — database addresses here are more likely to be current primary residences.
Common search scenarios
Searching by name in Washtenaw County
Run ICHAT statewide first. For MiCourt, Washtenaw County Circuit Court covers felony and civil matters. Ann Arbor 15th District Court handles city misdemeanor matters separately. For any UM-adjacent Ann Arbor address, check whether the address is current. The Washtenaw County Register of Deeds property portal is well-maintained and useful for confirming current ownership.
Checking court records
ICHAT statewide → OTIS for current supervision → MiCourt for Washtenaw County Circuit Court → Ann Arbor 15th District Court for Ann Arbor city misdemeanor matters → Washtenaw County Register of Deeds for property confirmation. See our court record search guide for national context.
Former UM and EMU students
For anyone who attended UM or EMU, the key step is establishing whether the Washtenaw County address is current or historical. Graduation year combined with current employment location is the most reliable indicator — someone who graduated UM in 2018 and works in New York City has a historical Ann Arbor address in databases, not a current one. Treat university ZIP codes as potentially historical for graduates two or more years out.
Start Here: Enter Any Name To View Records
Best sites to review first
Before running ICHAT and MiCourt for Washtenaw County, these are the two services I recommend reviewing first.
| Service | Why people use it | Best fit |
|---|---|---|
| Instant Checkmate | Useful for distinguishing current Ann Arbor residents from former UM students with historical campus-area addresses — the most common address-interpretation challenge in Washtenaw County searches. | Quick first-pass searches |
| TruthFinder | Useful for address history context that spans both the Washtenaw County student years and the post-graduation location — important for UM alumni who have relocated to other cities. | Expanded public-record context |
Frequently asked questions
Does Washtenaw County have an online court records search?
Yes. Washtenaw County Circuit Court records are accessible through MiCourt (courts.michigan.gov). Ann Arbor's 15th District Court has its own online portal for city-level misdemeanor and civil matters. For statewide criminal history across all 83 Michigan counties including Washtenaw, use ICHAT (fee-based). OTIS (free) covers current state corrections supervision and includes photos for identity confirmation.
Can you look up marriage or divorce records in Washtenaw County?
Yes. Marriage licenses in Washtenaw County are issued by the Washtenaw County Clerk. Michigan MDHHS maintains a statewide marriage index from 1867 forward and a divorce index from 1897 forward — requests go by mail. Divorce case indexes are accessible through MiCourt for Washtenaw County Circuit Court Family Division. Washtenaw County's marriage and divorce filing volumes are elevated relative to its population size due to the professional and academic demographic.
Can I use these searches for jobs, housing, or insurance decisions?
No. The services discussed on this page are not consumer reporting agencies and the information here is not a consumer report. They should not be used for employment, tenant screening, insurance underwriting, credit, or any other purpose regulated by the Fair Credit Reporting Act.
Other Michigan county guides
- Wayne County, MI (Detroit)
- Oakland County, MI
- Kent County, MI (Grand Rapids)
- Macomb County, MI (Warren/Sterling Heights)
Browse all county guides: People Search by County
