| District | City | # Criminal Investigators | Per Capita | Rank |
| U.S. | 3,544 | 13.2 | - | |
| Ala, N | Birmingham | 24 | 9.5 | 57 |
| Ala, M | Montgomery | 4 | 4.0 | 86 |
| Ala, S | Mobile | 5 | 6.4 | 74 |
| Alaska | Anchorage | 12 | 19.7 | 9 |
| Arizona | Phoenix | 54 | 11.9 | 42 |
| Ark, E | Little Rock | 14 | 9.6 | 54 |
| Ark, W | Fort Smith | 4 | 3.7 | 87 |
| Cal, N | San Francisco | 116 | 16.5 | 16 |
| Cal, C | Los Angeles | 191 | 11.8 | 43 |
| Cal, E | Sacramento | 38 | 6.2 | 77 |
| Cal, S | San Diego | 62 | 21.6 | 7 |
| Colorado | Denver | 66 | 17.0 | 13 |
| Conn | New Haven | 48 | 14.7 | 22 |
| Delaware | Wilmington | 11 | 15.0 | 21 |
| D. C. | Washington | 102 | 192.9 | 1 |
| Fla, N | Pensacola | 10 | 6.9 | 69 |
| Fla, M | Tampa | 79 | 10.1 | 50 |
| Fla, S | Miami | 127 | 23.4 | 3 |
| Ga, N | Atlanta | 76 | 17.0 | 13 |
| Ga, M | Macon | 10 | 5.8 | 79 |
| Ga, S | Savannah | 28 | 21.9 | 6 |
| Hawaii | Honolulu | 27 | 22.7 | 5 |
| Idaho | Boise | 15 | 12.4 | 39 |
| Ill, N | Chicago | 162 | 19.0 | 11 |
| Ill, S | East St. Louis | 11 | 8.7 | 61 |
| Ill, C | Springfield | 16 | 7.3 | 67 |
| Ind, N | South Bend | 25 | 10.5 | 47 |
| Ind, S | Indianapolis | 40 | 11.5 | 45 |
| Iowa, N | Cedar Rapids | 7 | 5.4 | 81 |
| Iowa, S | Des Moines | 14 | 9.0 | 60 |
| Kansas | Topeka | 18 | 6.9 | 69 |
| Ken, E | Lexington | 13 | 6.7 | 71 |
| Ken, W | Louisville | 26 | 13.2 | 32 |
| La, E | New Orleans | 32 | 19.3 | 10 |
| La, M | Baton Rouge | 7 | 10.5 | 47 |
| La, W | Shreveport | 9 | 4.4 | 85 |
| Maine | Portland | 7 | 5.6 | 80 |
| Maryland | Baltimore | 65 | 12.8 | 35 |
| Mass | Boston | 79 | 12.9 | 34 |
| Mich, E | Detroit | 95 | 14.4 | 24 |
| Mich, W | Grand Rapids | 21 | 6.6 | 72 |
| Minnesota | Minneapolis | 44 | 9.4 | 58 |
| Miss, N | Oxford | 5 | 4.9 | 84 |
| Miss, S | Jackson | 16 | 9.4 | 58 |
| Mo, E | St. Louis | 40 | 14.7 | 22 |
| Mo, W | Kansas City | 36 | 13.4 | 30 |
| Montana | Billings | 10 | 11.4 | 46 |
| Nebraska | Omaha | 14 | 8.5 | 62 |
| Nevada | Las Vegas | 39 | 23.3 | 4 |
| New Hamp | Concord | 6 | 5.1 | 83 |
| N. J. | Newark | 108 | 13.4 | 30 |
| N Mexico | Albuquerque | 11 | 6.4 | 74 |
| N. Y., N | Syracuse | 27 | 8.1 | 64 |
| N. Y., E | Brooklyn | 120 | 16.4 | 17 |
| N. Y., S | Manhattan | 155 | 33.3 | 2 |
| N. Y., W | Buffalo | 39 | 13.8 | 27 |
| N Car, E | Raleigh | 19 | 6.6 | 72 |
| N Car, M | Greensboro | 18 | 7.9 | 65 |
| N Car, W | Asheville | 22 | 9.6 | 54 |
| N Dakota | Fargo | 8 | 12.5 | 37 |
| Ohio, N | Cleveland | 72 | 12.3 | 41 |
| Ohio, S | Cincinnati | 54 | 10.1 | 50 |
| Okla, N | Tulsa | 13 | 14.4 | 24 |
| Okla, E | Muskogee | 5 | 7.4 | 66 |
| Okla, W | Oklahoma City | 27 | 15.5 | 19 |
| Oregon | Portland | 31 | 9.6 | 54 |
| Penn, E | Philadelphia | 90 | 17.2 | 12 |
| Penn, M | Scranton | 24 | 8.4 | 63 |
| Penn, W | Pittsburgh | 46 | 11.7 | 44 |
| R. I. | Providence | 10 | 10.1 | 50 |
| S Car | Columbia | 27 | 7.1 | 68 |
| S Dakota | Sioux Falls | 10 | 13.7 | 28 |
| Tenn, E | Knoxville | 14 | 6.4 | 74 |
| Tenn, M | Nashville | 23 | 13.1 | 33 |
| Tenn, W | Memphis | 15 | 10.4 | 49 |
| Texas, N | Fort Worth | 114 | 20.8 | 8 |
| Texas, E | Tyler | 7 | 2.6 | 89 |
| Texas, S | Houston | 97 | 15.1 | 20 |
| Texas, W | San Antonio | 76 | 15.8 | 18 |
| Utah | Salt Lake City | 28 | 13.6 | 29 |
| Vermont | Burlington | 1 | 1.7 | 90 |
| Virg, E | Alexandria | 80 | 16.7 | 15 |
| Virg, W | Roanoke | 10 | 5.2 | 82 |
| Wash, E | Spokane | 4 | 3.2 | 88 |
| Wash, W | Seattle | 42 | 9.7 | 53 |
| W Virg, N | Wheeling | 12 | 14.1 | 26 |
| W Virg, S | Charleston | 12 | 12.4 | 39 |
| Wisc, E | Milwaukee | 39 | 12.6 | 36 |
| Wisc, W | Madison | 13 | 6.2 | 77 |
| Wyoming | Cheyenne | 6 | 12.5 | 37 |