| District | City | # Criminal Investigators | Per Capita | Rank |
| U.S. | 2,789 | 9.8 | - | |
| D. C. | Washington | 92 | 160.3 | 1 |
| Ga, S | Savannah | 178 | 132.7 | 2 |
| N. Y., S | Manhattan | 120 | 24.4 | 3 |
| Cal, S | San Diego | 62 | 20.6 | 4 |
| Hawaii | Honolulu | 24 | 19.6 | 5 |
| Fla, S | Miami | 106 | 17.4 | 6 |
| Alaska | Anchorage | 9 | 14.2 | 7 |
| Nevada | Las Vegas | 29 | 13.8 | 8 |
| La, E | New Orleans | 23 | 13.5 | 9 |
| Texas, N | Fort Worth | 78 | 12.9 | 10 |
| Ill, N | Chicago | 115 | 12.7 | 11 |
| Ala, S | Mobile | 9 | 11.3 | 12 |
| Delaware | Wilmington | 9 | 11.3 | 12 |
| N. Y., E | Brooklyn | 88 | 11.1 | 14 |
| Texas, W | San Antonio | 58 | 11.1 | 14 |
| Texas, S | Houston | 78 | 11.0 | 16 |
| Penn, E | Philadelphia | 59 | 10.8 | 17 |
| Penn, W | Pittsburgh | 41 | 10.5 | 18 |
| Cal, N | San Francisco | 78 | 10.4 | 19 |
| Wyoming | Cheyenne | 5 | 10.1 | 20 |
| Montana | Billings | 9 | 9.9 | 21 |
| Okla, W | Oklahoma City | 18 | 9.9 | 21 |
| N. J. | Newark | 83 | 9.8 | 23 |
| Cal, C | Los Angeles | 164 | 9.4 | 24 |
| N Dakota | Fargo | 6 | 9.4 | 24 |
| Conn | New Haven | 32 | 9.3 | 26 |
| Mich, E | Detroit | 62 | 9.3 | 26 |
| Ohio, N | Cleveland | 55 | 9.3 | 26 |
| W Virg, N | Wheeling | 8 | 9.3 | 26 |
| Mo, W | Kansas City | 26 | 9.2 | 30 |
| Colorado | Denver | 40 | 9.0 | 31 |
| Miss, S | Jackson | 16 | 9.0 | 31 |
| Maryland | Baltimore | 48 | 8.9 | 33 |
| Mass | Boston | 57 | 8.9 | 33 |
| Ill, S | East St. Louis | 11 | 8.7 | 35 |
| Virg, E | Alexandria | 45 | 8.7 | 35 |
| Ga, N | Atlanta | 45 | 8.6 | 37 |
| Tenn, W | Memphis | 13 | 8.6 | 37 |
| Ind, N | South Bend | 21 | 8.5 | 39 |
| Mo, E | St. Louis | 24 | 8.5 | 39 |
| Tenn, M | Nashville | 16 | 8.3 | 41 |
| N. Y., W | Buffalo | 23 | 8.1 | 42 |
| Ala, N | Birmingham | 21 | 8.0 | 43 |
| S Dakota | Sioux Falls | 6 | 7.9 | 44 |
| Ken, W | Louisville | 16 | 7.8 | 45 |
| Wisc, E | Milwaukee | 25 | 7.7 | 46 |
| Idaho | Boise | 10 | 7.6 | 47 |
| Fla, M | Tampa | 65 | 7.5 | 48 |
| Ind, S | Indianapolis | 27 | 7.4 | 49 |
| W Virg, S | Charleston | 7 | 7.4 | 49 |
| Ohio, S | Cincinnati | 39 | 7.1 | 51 |
| Utah | Salt Lake City | 15 | 6.6 | 52 |
| Wash, W | Seattle | 31 | 6.6 | 52 |
| Fla, N | Pensacola | 10 | 6.4 | 54 |
| Minnesota | Minneapolis | 32 | 6.4 | 54 |
| Okla, N | Tulsa | 6 | 6.3 | 56 |
| Oregon | Portland | 22 | 6.3 | 56 |
| Arizona | Phoenix | 33 | 6.2 | 58 |
| Ark, E | Little Rock | 9 | 5.9 | 59 |
| N. Y., N | Syracuse | 20 | 5.9 | 59 |
| N Car, W | Asheville | 15 | 5.9 | 59 |
| Penn, M | Scranton | 17 | 5.8 | 62 |
| Mich, W | Grand Rapids | 19 | 5.7 | 63 |
| R. I. | Providence | 6 | 5.7 | 63 |
| La, M | Baton Rouge | 4 | 5.6 | 65 |
| N Mexico | Albuquerque | 10 | 5.5 | 66 |
| N Car, E | Raleigh | 17 | 5.4 | 67 |
| Virg, W | Roanoke | 11 | 5.4 | 67 |
| Nebraska | Omaha | 9 | 5.2 | 69 |
| Tenn, E | Knoxville | 12 | 5.2 | 69 |
| Ill, C | Springfield | 11 | 5.0 | 71 |
| Iowa, S | Des Moines | 8 | 5.0 | 71 |
| Cal, E | Sacramento | 33 | 4.9 | 73 |
| Ga, M | Macon | 9 | 4.9 | 73 |
| Miss, N | Oxford | 5 | 4.7 | 75 |
| S Car | Columbia | 19 | 4.7 | 75 |
| Wash, E | Spokane | 6 | 4.5 | 77 |
| Ark, W | Fort Smith | 5 | 4.3 | 78 |
| Okla, E | Muskogee | 3 | 4.3 | 78 |
| Wisc, W | Madison | 9 | 4.1 | 80 |
| N Car, M | Greensboro | 10 | 4.0 | 81 |
| Ken, E | Lexington | 8 | 3.9 | 82 |
| Maine | Portland | 5 | 3.9 | 82 |
| Kansas | Topeka | 10 | 3.7 | 84 |
| New Hamp | Concord | 4 | 3.2 | 85 |
| Ala, M | Montgomery | 3 | 2.8 | 86 |
| La, W | Shreveport | 5 | 2.4 | 87 |
| Iowa, N | Cedar Rapids | 3 | 2.3 | 88 |
| Texas, E | Tyler | 6 | 2.0 | 89 |
| Vermont | Burlington | 1 | 1.6 | 90 |