| District | City | # Criminal Investigators | Per Capita | Rank |
| U.S. | 3,616 | 13.9 | - | |
| Ala, N | Birmingham | 25 | 10.0 | 55 |
| Ala, M | Montgomery | 4 | 4.0 | 86 |
| Ala, S | Mobile | 7 | 9.2 | 61 |
| Alaska | Anchorage | 12 | 20.0 | 11 |
| Arizona | Phoenix | 51 | 12.3 | 42 |
| Ark, E | Little Rock | 17 | 11.9 | 46 |
| Ark, W | Fort Smith | 5 | 4.9 | 84 |
| Cal, N | San Francisco | 122 | 17.9 | 13 |
| Cal, C | Los Angeles | 191 | 12.1 | 43 |
| Cal, E | Sacramento | 41 | 6.9 | 73 |
| Cal, S | San Diego | 48 | 17.4 | 16 |
| Colorado | Denver | 56 | 15.3 | 23 |
| Conn | New Haven | 49 | 15.0 | 26 |
| Delaware | Wilmington | 9 | 12.7 | 41 |
| D. C. | Washington | 110 | 194.4 | 1 |
| Fla, N | Pensacola | 16 | 11.5 | 48 |
| Fla, M | Tampa | 85 | 11.5 | 48 |
| Fla, S | Miami | 115 | 22.4 | 5 |
| Ga, N | Atlanta | 74 | 17.9 | 13 |
| Ga, M | Macon | 11 | 6.6 | 76 |
| Ga, S | Savannah | 30 | 24.1 | 3 |
| Hawaii | Honolulu | 25 | 21.3 | 6 |
| Idaho | Boise | 13 | 11.5 | 48 |
| Ill, N | Chicago | 173 | 20.7 | 9 |
| Ill, S | East St. Louis | 11 | 8.7 | 64 |
| Ill, C | Springfield | 17 | 7.8 | 69 |
| Ind, N | South Bend | 25 | 10.7 | 52 |
| Ind, S | Indianapolis | 44 | 12.9 | 38 |
| Iowa, N | Cedar Rapids | 8 | 6.2 | 78 |
| Iowa, S | Des Moines | 20 | 13.0 | 36 |
| Kansas | Topeka | 25 | 9.8 | 57 |
| Ken, E | Lexington | 18 | 9.5 | 60 |
| Ken, W | Louisville | 26 | 13.5 | 31 |
| La, E | New Orleans | 34 | 20.6 | 10 |
| La, M | Baton Rouge | 5 | 7.6 | 71 |
| La, W | Shreveport | 7 | 3.5 | 89 |
| Maine | Portland | 7 | 5.7 | 80 |
| Maryland | Baltimore | 60 | 12.0 | 44 |
| Mass | Boston | 82 | 13.6 | 30 |
| Mich, E | Detroit | 91 | 14.1 | 27 |
| Mich, W | Grand Rapids | 24 | 7.7 | 70 |
| Minnesota | Minneapolis | 45 | 9.9 | 56 |
| Miss, N | Oxford | 4 | 4.0 | 86 |
| Miss, S | Jackson | 16 | 9.6 | 59 |
| Mo, E | St. Louis | 43 | 15.9 | 22 |
| Mo, W | Kansas City | 36 | 13.9 | 28 |
| Montana | Billings | 9 | 10.5 | 53 |
| Nebraska | Omaha | 15 | 9.2 | 61 |
| Nevada | Las Vegas | 34 | 23.3 | 4 |
| New Hamp | Concord | 6 | 5.3 | 82 |
| N. J. | Newark | 120 | 15.2 | 25 |
| N Mexico | Albuquerque | 12 | 7.3 | 72 |
| N. Y., N | Syracuse | 29 | 8.5 | 65 |
| N. Y., E | Brooklyn | 111 | 15.3 | 23 |
| N. Y., S | Manhattan | 178 | 38.7 | 2 |
| N. Y., W | Buffalo | 34 | 11.9 | 46 |
| N Car, E | Raleigh | 22 | 8.0 | 68 |
| N Car, M | Greensboro | 19 | 8.8 | 63 |
| N Car, W | Asheville | 18 | 8.3 | 67 |
| N Dakota | Fargo | 11 | 17.2 | 18 |
| Ohio, N | Cleveland | 76 | 13.0 | 36 |
| Ohio, S | Cincinnati | 63 | 12.0 | 44 |
| Okla, N | Tulsa | 12 | 13.8 | 29 |
| Okla, E | Muskogee | 4 | 6.1 | 79 |
| Okla, W | Oklahoma City | 34 | 19.8 | 12 |
| Oregon | Portland | 35 | 11.3 | 51 |
| Penn, E | Philadelphia | 91 | 17.4 | 16 |
| Penn, M | Scranton | 24 | 8.4 | 66 |
| Penn, W | Pittsburgh | 51 | 12.9 | 38 |
| R. I. | Providence | 13 | 13.1 | 35 |
| S Car | Columbia | 23 | 6.3 | 77 |
| S Dakota | Sioux Falls | 5 | 6.9 | 73 |
| Tenn, E | Knoxville | 14 | 6.7 | 75 |
| Tenn, M | Nashville | 22 | 13.4 | 32 |
| Tenn, W | Memphis | 19 | 13.4 | 32 |
| Texas, N | Fort Worth | 112 | 21.3 | 6 |
| Texas, E | Tyler | 9 | 3.6 | 88 |
| Texas, S | Houston | 109 | 17.9 | 13 |
| Texas, W | San Antonio | 74 | 16.4 | 21 |
| Utah | Salt Lake City | 25 | 12.9 | 38 |
| Vermont | Burlington | 1 | 1.7 | 90 |
| Virg, E | Alexandria | 79 | 17.1 | 19 |
| Virg, W | Roanoke | 10 | 5.2 | 83 |
| Wash, E | Spokane | 5 | 4.1 | 85 |
| Wash, W | Seattle | 40 | 9.7 | 58 |
| W Virg, N | Wheeling | 14 | 16.5 | 20 |
| W Virg, S | Charleston | 10 | 10.3 | 54 |
| Wisc, E | Milwaukee | 41 | 13.4 | 32 |
| Wisc, W | Madison | 11 | 5.4 | 81 |
| Wyoming | Cheyenne | 10 | 21.1 | 8 |