FIPS
Code | State | County name | 2003 urban
influence code | Description | 2000 population |
|---|
| 39001 | OH | Adams County | 4 | Noncore adjacent to a large metro area | 27,330 |
| 39003 | OH | Allen County | 2 | Small-in a metro area with fewer than 1 million residents | 108,473 |
| 39005 | OH | Ashland County | 5 | Micropolitan adjacent to a small metro area | 52,523 |
| 39007 | OH | Ashtabula County | 3 | Micropolitan adjacent to a large metro area | 102,728 |
| 39009 | OH | Athens County | 5 | Micropolitan adjacent to a small metro area | 62,223 |
| 39011 | OH | Auglaize County | 5 | Micropolitan adjacent to a small metro area | 46,611 |
| 39013 | OH | Belmont County | 2 | Small-in a metro area with fewer than 1 million residents | 70,226 |
| 39015 | OH | Brown County | 1 | Large-in a metro area with at least 1 million residents or more | 42,285 |
| 39017 | OH | Butler County | 1 | Large-in a metro area with at least 1 million residents or more | 332,807 |
| 39019 | OH | Carroll County | 2 | Small-in a metro area with fewer than 1 million residents | 28,836 |
| 39021 | OH | Champaign County | 5 | Micropolitan adjacent to a small metro area | 38,890 |
| 39023 | OH | Clark County | 2 | Small-in a metro area with fewer than 1 million residents | 144,742 |
| 39025 | OH | Clermont County | 1 | Large-in a metro area with at least 1 million residents or more | 177,977 |
| 39027 | OH | Clinton County | 3 | Micropolitan adjacent to a large metro area | 40,543 |
| 39029 | OH | Columbiana County | 5 | Micropolitan adjacent to a small metro area | 112,075 |
| 39031 | OH | Coshocton County | 3 | Micropolitan adjacent to a large metro area | 36,655 |
| 39033 | OH | Crawford County | 5 | Micropolitan adjacent to a small metro area | 46,966 |
| 39035 | OH | Cuyahoga County | 1 | Large-in a metro area with at least 1 million residents or more | 1,393,978 |
| 39037 | OH | Darke County | 5 | Micropolitan adjacent to a small metro area | 53,309 |
| 39039 | OH | Defiance County | 5 | Micropolitan adjacent to a small metro area | 39,500 |
| 39041 | OH | Delaware County | 1 | Large-in a metro area with at least 1 million residents or more | 109,989 |
| 39043 | OH | Erie County | 2 | Small-in a metro area with fewer than 1 million residents | 79,551 |
| 39045 | OH | Fairfield County | 1 | Large-in a metro area with at least 1 million residents or more | 122,759 |
| 39047 | OH | Fayette County | 3 | Micropolitan adjacent to a large metro area | 28,433 |
| 39049 | OH | Franklin County | 1 | Large-in a metro area with at least 1 million residents or more | 1,068,978 |
| 39051 | OH | Fulton County | 2 | Small-in a metro area with fewer than 1 million residents | 42,084 |
| 39053 | OH | Gallia County | 5 | Micropolitan adjacent to a small metro area | 31,069 |
| 39055 | OH | Geauga County | 1 | Large-in a metro area with at least 1 million residents or more | 90,895 |
| 39057 | OH | Greene County | 2 | Small-in a metro area with fewer than 1 million residents | 147,886 |
| 39059 | OH | Guernsey County | 5 | Micropolitan adjacent to a small metro area | 40,792 |
| 39061 | OH | Hamilton County | 1 | Large-in a metro area with at least 1 million residents or more | 845,303 |
| 39063 | OH | Hancock County | 5 | Micropolitan adjacent to a small metro area | 71,295 |
| 39065 | OH | Hardin County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 31,945 |
| 39067 | OH | Harrison County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 15,856 |
| 39069 | OH | Henry County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 29,210 |
| 39071 | OH | Highland County | 4 | Noncore adjacent to a large metro area | 40,875 |
| 39073 | OH | Hocking County | 4 | Noncore adjacent to a large metro area | 28,241 |
| 39075 | OH | Holmes County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 38,943 |
| 39077 | OH | Huron County | 5 | Micropolitan adjacent to a small metro area | 59,487 |
| 39079 | OH | Jackson County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 32,641 |
| 39081 | OH | Jefferson County | 2 | Small-in a metro area with fewer than 1 million residents | 73,894 |
| 39083 | OH | Knox County | 3 | Micropolitan adjacent to a large metro area | 54,500 |
| 39085 | OH | Lake County | 1 | Large-in a metro area with at least 1 million residents or more | 227,511 |
| 39087 | OH | Lawrence County | 2 | Small-in a metro area with fewer than 1 million residents | 62,319 |
| 39089 | OH | Licking County | 1 | Large-in a metro area with at least 1 million residents or more | 145,491 |
| 39091 | OH | Logan County | 3 | Micropolitan adjacent to a large metro area | 46,005 |
| 39093 | OH | Lorain County | 1 | Large-in a metro area with at least 1 million residents or more | 284,664 |
| 39095 | OH | Lucas County | 2 | Small-in a metro area with fewer than 1 million residents | 455,054 |
| 39097 | OH | Madison County | 1 | Large-in a metro area with at least 1 million residents or more | 40,213 |
| 39099 | OH | Mahoning County | 2 | Small-in a metro area with fewer than 1 million residents | 257,555 |
| 39101 | OH | Marion County | 3 | Micropolitan adjacent to a large metro area | 66,217 |
| 39103 | OH | Medina County | 1 | Large-in a metro area with at least 1 million residents or more | 151,095 |
| 39105 | OH | Meigs County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 23,072 |
| 39107 | OH | Mercer County | 8 | Micropolitan not adjacent to a metro area | 40,924 |
| 39109 | OH | Miami County | 2 | Small-in a metro area with fewer than 1 million residents | 98,868 |
| 39111 | OH | Monroe County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 15,180 |
| 39113 | OH | Montgomery County | 2 | Small-in a metro area with fewer than 1 million residents | 559,062 |
| 39115 | OH | Morgan County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 14,897 |
| 39117 | OH | Morrow County | 1 | Large-in a metro area with at least 1 million residents or more | 31,628 |
| 39119 | OH | Muskingum County | 3 | Micropolitan adjacent to a large metro area | 84,585 |
| 39121 | OH | Noble County | 7 | Noncore adjacent to a small metro and does not contain a town of at least 2,500 residents | 14,058 |
| 39123 | OH | Ottawa County | 2 | Small-in a metro area with fewer than 1 million residents | 40,985 |
| 39125 | OH | Paulding County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 20,293 |
| 39127 | OH | Perry County | 4 | Noncore adjacent to a large metro area | 34,078 |
| 39129 | OH | Pickaway County | 1 | Large-in a metro area with at least 1 million residents or more | 52,727 |
| 39131 | OH | Pike County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 27,695 |
| 39133 | OH | Portage County | 2 | Small-in a metro area with fewer than 1 million residents | 152,061 |
| 39135 | OH | Preble County | 2 | Small-in a metro area with fewer than 1 million residents | 42,337 |
| 39137 | OH | Putnam County | 6 | Noncore adjacent to a small metro with town of at least 2,500 residents | 34,726 |
| 39139 | OH | Richland County | 2 | Small-in a metro area with fewer than 1 million residents | 128,852 |
| 39141 | OH | Ross County | 3 | Micropolitan adjacent to a large metro area | 73,345 |
| 39143 | OH | Sandusky County | 5 | Micropolitan adjacent to a small metro area | 61,792 |
| 39145 | OH | Scioto County | 5 | Micropolitan adjacent to a small metro area | 79,195 |
| 39147 | OH | Seneca County | 5 | Micropolitan adjacent to a small metro area | 58,683 |
| 39149 | OH | Shelby County | 5 | Micropolitan adjacent to a small metro area | 47,910 |
| 39151 | OH | Stark County | 2 | Small-in a metro area with fewer than 1 million residents | 378,098 |
| 39153 | OH | Summit County | 2 | Small-in a metro area with fewer than 1 million residents | 542,899 |
| 39155 | OH | Trumbull County | 2 | Small-in a metro area with fewer than 1 million residents | 225,116 |
| 39157 | OH | Tuscarawas County | 5 | Micropolitan adjacent to a small metro area | 90,914 |
| 39159 | OH | Union County | 1 | Large-in a metro area with at least 1 million residents or more | 40,909 |
| 39161 | OH | Van Wert County | 5 | Micropolitan adjacent to a small metro area | 29,659 |
| 39163 | OH | Vinton County | 10 | Noncore adjacent to micro area and does not contain a town of at least 2,500 residents | 12,806 |
| 39165 | OH | Warren County | 1 | Large-in a metro area with at least 1 million residents or more | 158,383 |
| 39167 | OH | Washington County | 2 | Small-in a metro area with fewer than 1 million residents | 63,251 |
| 39169 | OH | Wayne County | 3 | Micropolitan adjacent to a large metro area | 111,564 |
| 39171 | OH | Williams County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 39,188 |
| 39173 | OH | Wood County | 2 | Small-in a metro area with fewer than 1 million residents | 121,065 |
| 39175 | OH | Wyandot County | 9 | Noncore adjacent to micro area and contains a town of 2,500- 9,999 residents | 22,908 |
