January 2, 1818 (Territorial Laws,
1817–1818, p. 15)
Origin of the name of the
county:
Named for the federal union of the American
States.
Present area, or parts of
it, formerly included in:
1812–1818
Johnson
1795–1812
Randolph
1790–1795
St. Clair
County Seat:
1818–
Jonesboro
History of county
governing board:
1818–1819
Justices’ Court
1819–1849
County Commissioners’ Court
1849–1873
County Court
1873–
Board of County Commissioners
Township Government
Union county has never adopted township form
of government. The county has been divided into precincts.
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