FMSCA Regulation 372.221
372.221 Twin Cities.
For the purpose of determining commercial zones, utilizing the general population-mileage formula as set forth in 372.241, each of the following combinations of cities shall be considered as a single municipality:
(a) Having a population equal to the sum of their combined populations, and
(b) Having boundaries comprised of their combined corporate limits, with the common portion thereof disregarded:
(b)(1) Bluefield, Va.-W. Va.
(b)(2) Bristol, Va.-Tenn.
(b)(3) Davenport, Iowa, and Rock Island and Moline, Ill.
(b)(4) Delmar, Del-Md.
(b)(5) Harrison, Ohio-West Harrison, Ind.
(b)(6) Junction City, Ark.-La.
(b)(7) Kansas City, Mo.-Kansas City, Kans.
(b)(8) Minneapolis-St. Paul, Minn.
(b)(9) St. Louis, Mo.-East St. Louis, Ill.
(b)(10) Texarkana, Ark.-Tex.
(b)(11) Texhoma, Tex.-Okla.
(b)(12) Union City, Ind.-Ohio.
