{"data":{"id":"us/40-cfr-appendix-i-to-part-122","jurisdiction":"us","citation":"40 CFR Appendix I to Part 122","heading":"Appendix I to Part 122—Counties With Unincorporated Urbanized Areas Greater Than 100,000, But Less Than 250,000 According to the 1990 Decennial Census by the Bureau of the Census","body":"State County Unincorporated urbanized population\nAlabama Jefferson 78,608\nArizona Pima 162,202\nCalifornia Alameda 115,082\nContra Costa 131,082\nKern 128,503\nOrange 223,081\nRiverside 166,509\nSan Bernardino 162,202\nColorado Arapahoe 103,248\nFlorida Broward 142,329\nEscambia 167,463\nHillsborough 398,593\nLee 102,337\nManatee 123,828\nOrange 378,611\nPalm Beach 360,553\nPasco 148,907\nPinellas 255,772\nPolk 121,528\nSarasota 172,600\nSeminole 127,873\nGeorgia Clayton 133,237\nCobb 322,595\nFulton 127,776\nGwinnett 237,305\nRichmond 126,476\nKentucky Jefferson 239,430\nLouisiana East Baton Rouge 102,539\nParish 331,307\nJefferson Parish\nMaryland Howard 157,972\nNorth Carolina Cumberland 146,827\nNevada Clark 327,618\nOregon Multnomah 1 52,923\nWashington 116,687\nSouth Carolina Greenville 147,464\nRichland 130,589\nVirginia Arlington 170,936\nChesterfield 174,488\nHenrico 201,367\nPrince William 157,131\nWashington Pierce 258,530\nSnohomish 157,218\n1 County was previously listed in this appendix; however, population dropped to below 100,000 in the 1990 Census.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER D—WATER PROGRAMS","PART 122—EPA ADMINISTERED PERMIT PROGRAMS: THE NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"3680c6620347cd883d360d0cd3ce46f53f8c67894de29989b77cb6afc57d83ff","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-appendix-h-to-part-122","next":"us/40-cfr-appendix-j-to-part-122"},"notice":"GroundRules: Original legal text. Not legal advice."}