| District | City | # Criminal Investigators | Per Capita | Rank |
| U.S. | 3,400 | 12.6 | - | |
| Ala, N | Birmingham | 22 | 8.6 | 58 |
| Ala, M | Montgomery | 4 | 4.0 | 83 |
| Ala, S | Mobile | 5 | 6.4 | 69 |
| Alaska | Anchorage | 12 | 19.5 | 8 |
| Arizona | Phoenix | 49 | 10.5 | 45 |
| Ark, E | Little Rock | 13 | 8.9 | 54 |
| Ark, W | Fort Smith | 4 | 3.7 | 85 |
| Cal, N | San Francisco | 112 | 15.7 | 14 |
| Cal, C | Los Angeles | 185 | 11.3 | 38 |
| Cal, E | Sacramento | 39 | 6.3 | 70 |
| Cal, S | San Diego | 59 | 20.3 | 6 |
| Colorado | Denver | 58 | 14.6 | 19 |
| Conn | New Haven | 42 | 12.8 | 26 |
| Delaware | Wilmington | 10 | 13.4 | 22 |
| D. C. | Washington | 92 | 176.4 | 1 |
| Fla, N | Pensacola | 10 | 6.8 | 65 |
| Fla, M | Tampa | 75 | 9.5 | 50 |
| Fla, S | Miami | 121 | 22.0 | 4 |
| Ga, N | Atlanta | 73 | 15.9 | 12 |
| Ga, M | Macon | 10 | 5.7 | 74 |
| Ga, S | Savannah | 120 | 93.0 | 2 |
| Hawaii | Honolulu | 23 | 19.3 | 9 |
| Idaho | Boise | 13 | 10.6 | 44 |
| Ill, N | Chicago | 149 | 17.3 | 10 |
| Ill, S | East St. Louis | 12 | 9.4 | 52 |
| Ill, C | Springfield | 13 | 5.9 | 73 |
| Ind, N | South Bend | 23 | 9.6 | 49 |
| Ind, S | Indianapolis | 38 | 10.8 | 43 |
| Iowa, N | Cedar Rapids | 5 | 3.9 | 84 |
| Iowa, S | Des Moines | 14 | 8.9 | 54 |
| Kansas | Topeka | 16 | 6.1 | 71 |
| Ken, E | Lexington | 15 | 7.7 | 63 |
| Ken, W | Louisville | 22 | 11.1 | 40 |
| La, E | New Orleans | 28 | 16.8 | 11 |
| La, M | Baton Rouge | 7 | 10.4 | 46 |
| La, W | Shreveport | 6 | 3.0 | 88 |
| Maine | Portland | 6 | 4.8 | 80 |
| Maryland | Baltimore | 66 | 12.9 | 24 |
| Mass | Boston | 72 | 11.7 | 35 |
| Mich, E | Detroit | 86 | 13.0 | 23 |
| Mich, W | Grand Rapids | 21 | 6.5 | 67 |
| Minnesota | Minneapolis | 38 | 8.0 | 61 |
| Miss, N | Oxford | 5 | 4.9 | 79 |
| Miss, S | Jackson | 15 | 8.7 | 56 |
| Mo, E | St. Louis | 34 | 12.4 | 30 |
| Mo, W | Kansas City | 33 | 12.2 | 32 |
| Montana | Billings | 9 | 10.2 | 47 |
| Nebraska | Omaha | 8 | 4.8 | 80 |
| Nevada | Las Vegas | 36 | 20.6 | 5 |
| New Hamp | Concord | 6 | 5.1 | 77 |
| N. J. | Newark | 102 | 12.6 | 28 |
| N Mexico | Albuquerque | 9 | 5.2 | 76 |
| N. Y., N | Syracuse | 29 | 8.7 | 56 |
| N. Y., E | Brooklyn | 110 | 15.0 | 18 |
| N. Y., S | Manhattan | 142 | 30.4 | 3 |
| N. Y., W | Buffalo | 36 | 12.8 | 26 |
| N Car, E | Raleigh | 18 | 6.1 | 71 |
| N Car, M | Greensboro | 17 | 7.4 | 64 |
| N Car, W | Asheville | 20 | 8.6 | 58 |
| N Dakota | Fargo | 7 | 11.0 | 41 |
| Ohio, N | Cleveland | 67 | 11.4 | 37 |
| Ohio, S | Cincinnati | 51 | 9.5 | 50 |
| Okla, N | Tulsa | 11 | 12.1 | 34 |
| Okla, E | Muskogee | 2 | 2.9 | 89 |
| Okla, W | Oklahoma City | 24 | 13.7 | 20 |
| Oregon | Portland | 26 | 7.9 | 62 |
| Penn, E | Philadelphia | 82 | 15.7 | 14 |
| Penn, M | Scranton | 19 | 6.6 | 66 |
| Penn, W | Pittsburgh | 43 | 11.0 | 41 |
| R. I. | Providence | 9 | 9.1 | 53 |
| S Car | Columbia | 25 | 6.5 | 67 |
| S Dakota | Sioux Falls | 10 | 13.7 | 20 |
| Tenn, E | Knoxville | 12 | 5.5 | 75 |
| Tenn, M | Nashville | 20 | 11.2 | 39 |
| Tenn, W | Memphis | 17 | 11.7 | 35 |
| Texas, N | Fort Worth | 110 | 19.8 | 7 |
| Texas, E | Tyler | 6 | 2.2 | 90 |
| Texas, S | Houston | 100 | 15.2 | 17 |
| Texas, W | San Antonio | 77 | 15.8 | 13 |
| Utah | Salt Lake City | 26 | 12.4 | 30 |
| Vermont | Burlington | 2 | 3.4 | 86 |
| Virg, E | Alexandria | 74 | 15.3 | 16 |
| Virg, W | Roanoke | 10 | 5.1 | 77 |
| Wash, E | Spokane | 4 | 3.2 | 87 |
| Wash, W | Seattle | 43 | 9.7 | 48 |
| W Virg, N | Wheeling | 11 | 12.9 | 24 |
| W Virg, S | Charleston | 8 | 8.3 | 60 |
| Wisc, E | Milwaukee | 38 | 12.2 | 32 |
| Wisc, W | Madison | 10 | 4.7 | 82 |
| Wyoming | Cheyenne | 6 | 12.5 | 29 |