| District | City | # Criminal Investigators | Per Capita | Rank |
| U.S. | 3,752 | 14.1 | - | |
| Ala, N | Birmingham | 24 | 9.5 | 59 |
| Ala, M | Montgomery | 5 | 5.0 | 83 |
| Ala, S | Mobile | 6 | 7.8 | 69 |
| Alaska | Anchorage | 13 | 21.5 | 9 |
| Arizona | Phoenix | 56 | 12.6 | 42 |
| Ark, E | Little Rock | 16 | 11.0 | 51 |
| Ark, W | Fort Smith | 4 | 3.8 | 88 |
| Cal, N | San Francisco | 125 | 18.0 | 16 |
| Cal, C | Los Angeles | 205 | 12.8 | 39 |
| Cal, E | Sacramento | 43 | 7.1 | 73 |
| Cal, S | San Diego | 63 | 22.4 | 7 |
| Colorado | Denver | 65 | 17.0 | 19 |
| Conn | New Haven | 52 | 15.9 | 24 |
| Delaware | Wilmington | 11 | 15.1 | 29 |
| D. C. | Washington | 108 | 200.1 | 1 |
| Fla, N | Pensacola | 12 | 8.3 | 64 |
| Fla, M | Tampa | 88 | 11.5 | 47 |
| Fla, S | Miami | 129 | 24.2 | 6 |
| Ga, N | Atlanta | 84 | 19.3 | 12 |
| Ga, M | Macon | 9 | 5.3 | 82 |
| Ga, S | Savannah | 32 | 25.3 | 4 |
| Hawaii | Honolulu | 29 | 24.4 | 5 |
| Idaho | Boise | 15 | 12.6 | 42 |
| Ill, N | Chicago | 176 | 20.8 | 11 |
| Ill, S | East St. Louis | 11 | 8.7 | 63 |
| Ill, C | Springfield | 16 | 7.3 | 72 |
| Ind, N | South Bend | 26 | 11.0 | 51 |
| Ind, S | Indianapolis | 40 | 11.6 | 46 |
| Iowa, N | Cedar Rapids | 6 | 4.6 | 86 |
| Iowa, S | Des Moines | 15 | 9.7 | 57 |
| Kansas | Topeka | 17 | 6.6 | 76 |
| Ken, E | Lexington | 16 | 8.3 | 64 |
| Ken, W | Louisville | 28 | 14.3 | 31 |
| La, E | New Orleans | 35 | 21.1 | 10 |
| La, M | Baton Rouge | 6 | 9.0 | 61 |
| La, W | Shreveport | 9 | 4.5 | 87 |
| Maine | Portland | 7 | 5.7 | 80 |
| Maryland | Baltimore | 64 | 12.7 | 41 |
| Mass | Boston | 83 | 13.6 | 34 |
| Mich, E | Detroit | 98 | 14.9 | 30 |
| Mich, W | Grand Rapids | 25 | 7.9 | 68 |
| Minnesota | Minneapolis | 47 | 10.1 | 54 |
| Miss, N | Oxford | 5 | 4.9 | 84 |
| Miss, S | Jackson | 17 | 10.0 | 56 |
| Mo, E | St. Louis | 45 | 16.5 | 22 |
| Mo, W | Kansas City | 42 | 15.9 | 24 |
| Montana | Billings | 10 | 11.4 | 48 |
| Nebraska | Omaha | 16 | 9.7 | 57 |
| Nevada | Las Vegas | 43 | 26.9 | 3 |
| New Hamp | Concord | 7 | 6.0 | 79 |
| N. J. | Newark | 123 | 15.4 | 27 |
| N Mexico | Albuquerque | 13 | 7.6 | 70 |
| N. Y., N | Syracuse | 27 | 8.0 | 66 |
| N. Y., E | Brooklyn | 118 | 16.2 | 23 |
| N. Y., S | Manhattan | 166 | 35.8 | 2 |
| N. Y., W | Buffalo | 40 | 14.0 | 33 |
| N Car, E | Raleigh | 19 | 6.7 | 75 |
| N Car, M | Greensboro | 20 | 9.0 | 61 |
| N Car, W | Asheville | 21 | 9.4 | 60 |
| N Dakota | Fargo | 10 | 15.6 | 26 |
| Ohio, N | Cleveland | 78 | 13.3 | 37 |
| Ohio, S | Cincinnati | 59 | 11.1 | 49 |
| Okla, N | Tulsa | 17 | 19.1 | 13 |
| Okla, E | Muskogee | 5 | 7.5 | 71 |
| Okla, W | Oklahoma City | 30 | 17.3 | 18 |
| Oregon | Portland | 35 | 11.0 | 51 |
| Penn, E | Philadelphia | 94 | 18.0 | 16 |
| Penn, M | Scranton | 23 | 8.0 | 66 |
| Penn, W | Pittsburgh | 53 | 13.4 | 36 |
| R. I. | Providence | 11 | 11.1 | 49 |
| S Car | Columbia | 26 | 7.0 | 74 |
| S Dakota | Sioux Falls | 10 | 13.6 | 34 |
| Tenn, E | Knoxville | 14 | 6.5 | 77 |
| Tenn, M | Nashville | 22 | 12.8 | 39 |
| Tenn, W | Memphis | 19 | 13.2 | 38 |
| Texas, N | Fort Worth | 119 | 22.0 | 8 |
| Texas, E | Tyler | 6 | 2.3 | 89 |
| Texas, S | Houston | 106 | 16.8 | 21 |
| Texas, W | San Antonio | 80 | 17.0 | 19 |
| Utah | Salt Lake City | 31 | 15.3 | 28 |
| Vermont | Burlington | 1 | 1.7 | 90 |
| Virg, E | Alexandria | 88 | 18.6 | 15 |
| Virg, W | Roanoke | 11 | 5.7 | 80 |
| Wash, E | Spokane | 6 | 4.8 | 85 |
| Wash, W | Seattle | 43 | 10.1 | 54 |
| W Virg, N | Wheeling | 12 | 14.1 | 32 |
| W Virg, S | Charleston | 12 | 12.4 | 45 |
| Wisc, E | Milwaukee | 39 | 12.6 | 42 |
| Wisc, W | Madison | 13 | 6.3 | 78 |
| Wyoming | Cheyenne | 9 | 18.7 | 14 |