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:

1. (a) Having a population equal to the sum of their combined populations, and

2. (b) Having boundaries comprised of their combined corporate limits, with the common portion thereof disregarded:

   1. (1) Bluefield, Va.-W. Va.
   2. (2) Bristol, Va.-Tenn.
   3. (3) Davenport, Iowa, and Rock Island and Moline, Ill.
   4. (4) Delmar, Del-Md.
   5. (5) Harrison, Ohio-West Harrison, Ind.
   6. (6) Junction City, Ark.-La.
   7. (7) Kansas City, Mo.-Kansas City, Kans.
   8. (8) Minneapolis-St. Paul, Minn.
   9. (9) St. Louis, Mo.-East St. Louis, Ill.
   10. (10) Texarkana, Ark.-Tex.
   11. (11) Texhoma, Tex.-Okla.
   12. (12) Union City, Ind.-Ohio.

[41 FR 56654, Dec. 29, 1976, as amended at 62 FR 15422, Apr. 1, 1997]