Platte County Genealogy Records

Platte County genealogy records are kept at the Recorder of Deeds and the Circuit Clerk's office in Platte City, Missouri. The county sits in the Kansas City metro area and was organized in 1838 from the Platte Purchase, making it one of Missouri's younger counties by original formation. Marriage records go back to 1839, and land records cover the same period. Whether you are searching for a great-grandparent who settled here in the 1840s or tracing a more recent family line, Platte County has a solid set of records for genealogy research that spans nearly two centuries.

Platte County Recorder of Deeds

The Platte County Recorder of Deeds at 415 3rd St. in Platte City is where you find marriage licenses and land records going back to 1839. The phone number is 816-858-2232. For genealogy work, marriage records are often the most useful documents here. They name both parties, give a date, and in older records sometimes list the parents or witnesses, which helps you push a family line back another generation.

Land records in this office trace property ownership over time, which is a practical way to follow a family through different census years. When a deed transfers land from a parent to a child, or names multiple heirs, it confirms family relationships. Platte County land records run from 1839 through the present, covering the full span of the county's existence. The office also keeps military discharge records for veterans who chose to file them here, and those DD-214s can help confirm service dates and branch information for 20th-century ancestors.

Standard recording fees in Missouri are $24 for the first page and $3 for each page after that. Copies of recorded documents cost $1.00 per page. Marriage licenses cost $46.00 and are valid for 30 days anywhere in Missouri.

Note: Call ahead at 816-858-2232 before visiting to confirm document availability, especially for records from the 1800s that may require extra retrieval time.

Platte County Court and Probate Records

The Platte County Circuit Clerk maintains court records for the county going back to 1839. That includes divorce filings, probate case files, civil suits, naturalization records, and criminal case documents. The courthouse is located in Platte City. Probate records are a key genealogy source because they name heirs directly, describe how property was divided, and often reveal children, spouses, and siblings not found in other records. Platte County probate files go back to the county's founding year.

For cases filed on or after November 12, 2003, you can search free at Missouri Case.net. The system covers all Missouri judicial circuits and lets you look up cases by name, case number, or filing date. For older records, an in-person visit to the courthouse is required. Staff can search the index for you and provide copies of documents at standard rates.

Naturalization records filed in Platte County before federal courts took over the process in 1906 are stored at the courthouse. These records document when and where foreign-born ancestors became U.S. citizens and may include information about their country of origin.

Vital Records in Platte County

The Platte County Health Department holds local birth certificates from 1920 onward and death certificates from 1980 onward. Certified birth certificates cost $15.00 per copy, and you must show a valid photo ID and qualify as an eligible recipient. For older vital records or for records not held locally, the Missouri Bureau of Vital Records in Jefferson City is the statewide source. The Bureau can be reached at (573) 751-6387, and certified copies cost $15.00 each.

Before statewide registration began in 1910, vital records were often kept by county clerks. Platte County Clerk records include some birth and death entries from 1883 through 1894, though coverage from that period is not complete. Death records from 1910 through 1969 are available free online through Missouri Digital Heritage. That statewide database has over 9 million records and is fully searchable by name. If you know an ancestor died in Platte County during that window, this is the first place to look.

The Missouri Bureau of Vital Records website has forms and instructions for ordering certified copies by mail if you cannot visit Jefferson City in person.

Platte County Genealogy Research Resources

The Platte County Historical Society at 220 Ferrel Street in Platte City, phone (816) 858-3737, is the main local genealogy resource. The Society maintains family files, local photographs, cemetery records, and documents donated by area researchers over the years. Published county histories, including "History of Platte County, Missouri" from 1897, are available for in-person research. These old county histories often include biographical sketches of early settlers and can name parents, children, and migration routes that official records do not capture.

The Weston Historical Museum at 601 Main Street in Weston, phone 816-386-5927, holds records related to the northern part of the county, including Weston-area family histories and documents tied to that community's early settlement. Weston was an important river town in the mid-1800s and has records that reflect that period.

Mid-Continent Public Library serves the Kansas City metro, including Platte County. The main branch is at 2700 Clay Edwards Drive in North Kansas City, phone 816-741-4721. The Genealogy and Local History department there has one of the strongest collections in the region, with census records, newspapers on microfilm, city directories, and in-library access to premium databases including Ancestry Library Edition and HeritageQuest Online. The Weston Branch Library at 18204 Library Drive in Weston, phone 816-386-4563, also serves Platte County residents.

The Platte County MOGenWeb page offers transcribed records, links to local sources, and volunteer-submitted family histories for the county.

MOGenWeb is a free, volunteer-run network with county pages across Missouri, and the Platte County page links to many resources that are hard to find elsewhere.

Online Platte County Records

Missouri Digital Heritage is the main free portal for Platte County genealogy records online. It holds death certificates from 1910 to 1969, pre-1910 birth and death records, land records, and military discharge files. The site is free to use and requires no account. Missouri State Archives in Jefferson City holds microfilm of Platte County records and maintains finding guides that describe what is available for each county.

FamilySearch at familysearch.org has indexed many Platte County records from the 1800s, including census records from 1850 through 1940. Federal census records are the backbone of most genealogy searches. They list all household members, ages, birthplaces, and relationships. Platte County is covered in every census from 1840 onward, with the gap at 1890 due to the national fire that destroyed most of that census. The 1880 and 1900 censuses are particularly useful for bridging that gap.

The Missouri State Genealogical Association connects researchers with county-level genealogical societies and publishes resources for all Missouri counties. The State Historical Society of Missouri also holds newspaper archives and family history files relevant to Platte County research.

Note: Platte County has no major courthouse fire or disaster on record, so most genealogy records from 1839 onward are intact and available for research.