Search O'Fallon Genealogy Records

O'Fallon genealogy records are held at the St. Charles County government offices in St. Peters, Missouri. O'Fallon is the largest city in St. Charles County, but like all Missouri cities, its official birth, death, marriage, land, court, and probate records are maintained at the county level rather than by the city itself.

Records Are Kept at St. Charles County

O'Fallon residents' genealogy records are held at St. Charles County. The St. Charles County Recorder of Deeds is at 397 Turner Blvd, St. Peters, MO 63376, phone 636-949-7550. Marriage records at this office go back to 1804, and land records go back to 1800. These are among the oldest surviving county records in Missouri. St. Charles County was organized in 1812 as one of the five original districts of Missouri Territory, so the depth of records here is exceptional by Missouri standards.

The Circuit Clerk in St. Charles handles court, divorce, and probate records from 1804. Probate files are valuable for family research because they list heirs by name and document how property passed from one generation to the next. For researchers tracing O'Fallon families back through the 1800s or earlier, St. Charles County has one of the most complete sets of courthouse records in the state. The county has grown rapidly as a St. Louis suburb, but the older records predating that growth are on file and accessible.

The County Clerk maintained birth and death records from 1883 to 1894 during Missouri's early registration period. The County Health Department holds birth certificates from 1920 onward and death certificates from 1980 onward. For records from 1895 through 1909, a gap exists at the county level, and the Missouri State Archives holds what survives from that period on microfilm.

Note: St. Charles County's Recorder of Deeds office is located in St. Peters rather than in the city of St. Charles, which can confuse first-time researchers. The address is 397 Turner Blvd, St. Peters, MO 63376.

Vital Records in O'Fallon

For certified copies of birth and death certificates, contact the Missouri Bureau of Vital Records at 930 Wildwood Dr., Jefferson City, MO, phone (573) 751-6387. Certified copies cost $15.00 each. Birth records are available statewide from 1910 and death records from 1910 as well. For records before 1910, the Missouri State Archives holds St. Charles County vital records on microfilm. The county clerk maintained limited records from 1883 to 1894 that can sometimes fill in earlier gaps.

Death certificates from 1910 through 1969 are free to search at Missouri Digital Heritage. The database has over 9 million statewide records and covers St. Charles County residents. If you know an ancestor died in O'Fallon or elsewhere in St. Charles County between 1910 and 1969, this is the fastest free search option. The Missouri State Archives at 600 W. Main St., Jefferson City, phone (573) 751-3280, can also help identify which microfilm reels hold records for specific St. Charles County ancestors.

St. Charles County Research Resources

The St. Charles City-County Library at 1185 S. Scott Ave., St. Charles, MO 63303, phone 636-441-2300, serves the county and holds a local history and genealogy collection. The library provides in-library access to Ancestry Library Edition and HeritageQuest Online at no charge. Local newspapers on microfilm and local history books covering St. Charles County are also available. The library's genealogy resources are a practical starting point for any O'Fallon researcher who needs access to premium databases without a paid subscription.

The St. Charles County Historical Society at 101 S. Main St., St. Charles, MO 63301, phone 636-946-9828, holds collections related to the county's long history. This is one of the older counties in Missouri, and the Historical Society's archives reflect that depth. The collection includes photographs, family files, local histories, and records that predate the official courthouse system. For O'Fallon researchers tracing families back to the early 1800s or earlier French settlement period, the Historical Society is a strong complement to the courthouse records.

Online Records for O'Fallon Residents

Missouri Digital Heritage holds St. Charles County death certificates from 1910 to 1969 and other records free of charge. FamilySearch at familysearch.org has indexed St. Charles County census records from 1850 through 1940. St. Charles County's early settlement history means that census records from 1850 and earlier state censuses can be especially useful for tracing families back to the territorial period. Both sites are free.

Missouri Case.net at courts.mo.gov/casenet covers court cases from November 2003 onward. For older court records involving O'Fallon families, contact the St. Charles County Circuit Clerk. The St. Charles County MOGenWeb site is a volunteer resource with transcribed records and family histories, and the Missouri State Genealogical Association at mosga.org can connect you with researchers who specialize in St. Charles County genealogy.

The Missouri State Archives holds St. Charles County genealogy records on microfilm going back to 1800, making it one of the deepest county record sets in Missouri.

County recorder records in St. Charles County are among the oldest in Missouri, with land records dating to 1800.