Any contiguous territory that has at least five resident voters and includes a maximum of four congressional townships, together with any fractional townships that are contiguous with any of the congressional townships, may be organized as a civil township.
S.D. Codified Laws § 8-1-3
Maximum size and minimum number of voters in civil township
Source: SDC 1939, § 58.0103; SL 1980, ch 59, § 1; SL 1996, ch 58, § 1.
Official source: South Dakota Legislature. Reproduced from public-domain South Dakota statutes; confirm against the official source for the current text. Not legal advice.