Search Brown County Genealogy
Brown County genealogy records are managed by the county clerk in Mount Sterling, one of the smaller county seats in western Illinois. The clerk at 200 Court St holds marriage licenses, birth and death registers, and land records dating back to the county's formation. Brown County has a population of around 6,000, which makes it one of the least populated counties in the state. That small size means records are more manageable to search through, but it also means fewer staff handle requests. The IRAD depository at Western Illinois University in Macomb preserves older Brown County government documents. For researchers tracing family lines in this part of Illinois, both the local clerk and IRAD are key starting points.
Brown County Genealogy Quick Facts
Brown County Clerk Records
The Brown County Clerk is at 200 Court St in Mount Sterling. Call (217) 773-3421 for questions about records. This office holds the county's vital records, land documents, and marriage licenses. The Counties Code (55 ILCS 5) makes the county clerk the legal keeper of these files. Brown County was organized in 1839, so the oldest records go back nearly 190 years. Marriage records tend to be the most complete early documents in counties this size.
Because Brown County has such a small population, the clerk's office operates with limited staff. Wait times for mail requests may run longer than in bigger counties. Phone ahead before visiting to confirm hours. The Mount Sterling courthouse is a small operation, but the records are well kept. Staff can search indexes by name while you wait if you visit in person. For mail requests, send the full name, date range, record type, your payment, and a copy of your photo ID.
Early Brown County birth and death records from the late 1870s may exist at the clerk's office. Coverage is spotty before 1916 when statewide registration became mandatory. Marriage records are more reliable for early genealogy work in Brown County since they were recorded consistently from the start.
| Office | Brown County Clerk |
|---|---|
| Address | 200 Court St Mount Sterling, IL 62353 |
| Phone | (217) 773-3421 |
Brown County Vital Records
The Vital Records Act (410 ILCS 535) controls access to birth, death, and marriage records across all Illinois counties including Brown County. Birth records open for genealogy after 75 years. Death records open after 20 years. Marriage records open after 50 years. These time windows mean that most Brown County records from the 1800s and early 1900s are fully available for research.
The page below shows the Vital Records Act that governs access to Brown County genealogy records.
Genealogy copies from Brown County carry a stamp showing they are for research purposes only. They are not valid for legal identification. If you need a certified copy for a court matter or government application, different rules and higher fees apply. The clerk in Mount Sterling can explain the difference when you make your request.
For Brown County birth and death records from 1916 onward, the Illinois Department of Public Health keeps statewide files. IDPH genealogy requests go by mail only. The cost is $10 per copy. Processing takes about 12 weeks. For records before 1916, the Brown County Clerk or IRAD at WIU are your primary sources.
Brown County Records at IRAD
The IRAD depository for Brown County is at Western Illinois University in Macomb. Call (309) 298-2716 to ask about Brown County holdings. IRAD preserves older county government records transferred from the courthouse in Mount Sterling. These can include historical vital records, court case files, probate records, naturalization papers, and voter registers. Research at IRAD is free and you can photograph documents at no cost.
The IRAD holdings database lets you check what Brown County records exist at WIU before you make the trip to Macomb. The Local Records Act (50 ILCS 205) is the state law behind the IRAD system. It mandates that county records with lasting historical value be preserved rather than destroyed. For a small county like Brown, IRAD may hold records that the courthouse no longer has room to store. Naturalization records are a good example. Many Brown County immigrants filed their citizenship papers at the courthouse in the 1800s and early 1900s, and those files have since been transferred to WIU for preservation.
Note: IRAD phone and mail requests are limited to two names per inquiry for Brown County records.
Searching Brown County Genealogy Online
The Illinois State Archives has free online databases with Brown County entries. The statewide marriage index covers 1763 to 1900. Death indexes span the pre-1916 period and 1916 to 1950. These are useful for finding names and dates before you contact the Brown County Clerk or visit IRAD.
Brown County is in the Eighth Judicial Circuit. Court records from this circuit hold genealogy clues that vital records miss. Divorce decrees, probate files, guardianship records, and land disputes all name family members and reveal relationships between people. The circuit clerk in Mount Sterling handles court records separately from the county clerk. Old court files may have been transferred to IRAD at WIU.
The Freedom of Information Act (5 ILCS 140) shown above applies to Brown County public records. However, vital records follow their own access rules under the Vital Records Act. Recent birth and death files are restricted. Only records past the genealogy threshold can be requested freely for family research.
- State Archives marriage index: 1763 to 1900
- State Archives death index: pre-1916 and 1916-1950
- IRAD at WIU: free research, two-name limit by mail
- IDPH genealogy copy: $10 by mail, about 12 weeks
Nearby Counties
Brown County is in western Illinois near the Illinois River valley. Families in this area moved between neighboring counties often. If your Brown County search stalls, check these surrounding counties.