40 C.F.R. Appendix H to Part 122

Counties With Unincorporated Urbanized Areas With a Population of 250,000 or More According to the 1990 Decennial Census by the Bureau of the Census

Last amended: 2016Year: 2026Length: 76 wordsOfficial source

Cite as 40 C.F.R. Appendix H to Part 122 (2026)

State County Unincorporated urbanized population California Los Angeles 886,780 Sacramento 594,889 San Diego 250,414 Delaware New Castle 296,996 Florida Dade 1,014,504 Georgia DeKalb 448,686 Hawaii Honolulu 1 114,506 Maryland Anne Arundel 344,654 Baltimore 627,593 Montgomery 599,028 Prince George's 494,369 Texas Harris 729,206 Utah Salt Lake 270,989 Virginia Fairfax 760,730 Washington King 520,468 1 County was previously listed in this appendix; however, population dropped to below 250,000 in the 1990 Census. [64 FR 68848, Dec. 8, 1999]
40 C.F.R. Appendix H to Part 122: Counties With Unincorporated Urbanized Areas With a Population of 250,000 or More According to the 1990 Decennial Census by the Bureau of the Census | Justis AI