| Polk | Auditor | Certificates of Nominations | 1897-1904 |
| Polk | Auditor | Estray Record | 1888-1976 |
| Polk | Auditor | Name Bond Records | 1870-1907 |
| Polk | Auditor | Plat Books-Lands | 1870 forward |
| Polk | Auditor | Plat Books-Town Lots | 1870 forward |
| Polk | Auditor | Transfers-School | 1848-1888 |
| Polk | Board of Adjustment | Board of Adjustment-Case Files | 1956-1969 |
| Polk | Board of Supervisors | Board of Supervisors-General Files | 1946-1966 |
| Polk | Board of Supervisors | Board of Supervisors/County Administrator-General Files | 1963-1982 |
| Polk | Clerk | District Court-Judgment Docket | 1846-1862 |
| Polk | Clerk | Insurance Certificates | 1868-1919 |
| Polk | Clerk | Naturalizations-Index | 1900s |
| Polk | Clerk | Naturalizations-Military Petitions | 1918-1919 |
| Polk | Clerk | Naturalizations-Petition & Record | 1907-1927 |
| Polk | Clerk | Probate-Bonds-Administrator, Executor, Guardian | 1866-1902 |
| Polk | Clerk | Probate-Case Files | 1846-1914 |
| Polk | Clerk | Probate-Combined Probate Docket | 1877-1886 |
| Polk | Clerk | Probate-Deed Record | 1872-1892 |
| Polk | Clerk | Probate-General Index | 1850-1912 |
| Polk | Clerk | Probate-Letters-Guardian | 1878-1898 |
| Polk | Clerk | Probate-Record | 1860-1886 |
| Polk | Clerk | Probate-Wills | 1850-1893 |
| Polk | Clerk | Professional Register-Physicians & Surgeons | 1886-1953 |
| Polk | County Care Facility | County Home Receipts | 1926-1970 |
| Polk | County Care Facility | County Home Visitor’s Record | 1928-1970 |
| Polk | County Coroner | Coroner’s Inquest Record | 1917-1925 |
| Polk | General Services | General Services-General Files | 1920 forward |
| Polk | Physical Planning | Air Pollution Control Records | 1970-1985 |
| Polk | Physical Planning | Physical Planning Department-General Files | 1970-1990 |
| Polk | Recorder | Condemnations & Easements | 1881-1910 |
| Polk | Recorder | Deeds-Lands-Index | 1848-1901 |
| Polk | Recorder | Deeds-Lands-Record | 1846-1826 |
| Polk | Recorder | Deeds-Sheriff’s Deeds | 1872-1927 |
| Polk | Recorder | Deeds-Tax Sale Deeds | 1864-1928 |
| Polk | Recorder | Deeds-Town Lots-Index | 1851-1901 |
| Polk | Recorder | Deeds-Town Lots-Record | 1851-1926 |
| Polk | Recorder | Farm Names Register | 1911-1978 |
| Polk | Recorder | Maps/Plats-Plat Book | 1846-1846 |
| Polk | Recorder | Mortgages-Land/Town Lots-Index | 1848-1885 |
| Polk | Recorder | Mortgages-Lands-Record | 1851-1909 |
| Polk | Recorder | Mortgages-Town Lots-Record | 1851-1886 |
| Polk | Recorder | Original Entries, abstract | 1846-1855 |
| Polk | Recorder | Vital Statistics-Births-Record | 1880-1904; 1906-1921 |
| Polk | Recorder | Vital Statistics-Deaths-Record | 1880-1904; 1906-1907 |
| Polk | Recorder | Vital Statistics-Marriages-Record | 1847-1926 |
| Polk | Treasurer | Treasurer’s Accounts Ledger | 1863-1871 |
| Polk | Treasurer | Treasurer’s Warrant Register | 1849-1851 |
