Implementing the PSA
Discover what it takes to implement the PSA effectively and responsibly.
Where the PSA Is Used
Arizona, Kentucky, New Jersey, and Utah implemented the PSA statewide. Many counties and cities throughout the country also use the PSA. Refer to the list below for details on where the PSA is used. If your jurisdiction has implemented the PSA, and it is not listed below, please contact us to be added.
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PSA Locations by State
| Location | Population | Year |
|---|---|---|
| State of Arizona | 7,000,000 | 2017 |
| Location | Population | Year |
|---|---|---|
| Pulaski County | 399,145 | 2024 |
| Location | Population | Year |
|---|---|---|
| Alameda County | 1,649,000 | 2022 |
| Butte County | 208,334 | 2024 |
| Calaveras County | 45,602 | 2020 |
| Contra Costa County | 1,154,000 | 2020 |
| Del Norte County | 27,812 | 2020 |
| Fresno County | 999,101 | 2021 |
| Kern County | 917,673 | 2023 |
| Los Angeles County | 10,040,000 | 2020 |
| Marin County | 256,400 | 2024 |
| Mariposa County | 17,147 | 2022 |
| Mendocino County | 91,305 | 2022 |
| Merced County | 286,461 | 2022 |
| Mono County | 12,991 | 2024 |
| Monterey County | 437,325 | 2022 |
| Nevada County | 103,487 | 2022 |
| Riverside County | 2,471,000 | 2020 |
| Sacramento County | 1,552,000 | 2020 |
| San Francisco (City) | 884,000 | 2016 |
| Santa Clara County | 1,928,000 | 2021 |
| Santa Cruz County | 274,000 | 2014 |
| Sonoma County | 494,336 | 2020 |
| Stanislaus County | 552,999 | 2020 |
| Sutter County | 96,971 | 2020 |
| Tulare County | 464,493 | 2018 |
| Tuolumne County | 54,478 | 2020 |
| Ventura County | 832,605 | 2024 |
| Location | Population | Year |
|---|---|---|
| Douglas County | 368,990 | 2022 |
| Elbert County | 27,128 | 2023 |
| Lincoln County | 5,688 | 2023 |
| Location | Population | Year |
|---|---|---|
| Volusia County | 539,000 | 2016 |
| Location | Population | Year |
|---|---|---|
| Fulton County | 1,065,000 | 2022 |
| Location | Population | Year |
|---|---|---|
| Bannock County | 88,263 | 2023 |
| Boonesville County | 133,644 | 2024 |
| Location | Population | Year |
|---|---|---|
| Cook County | 5,200,000 | 2015 |
| Kane County | 535,000 | 2016 |
| Lake County | 696,535 | 2021 |
| McLean County | 172,000 | 2016 |
| Location | Population | Year |
|---|---|---|
| State of Kentucky | 4,500,000 | 2013 |
| Location | Population | Year |
|---|---|---|
| Orleans Parish | 393,000 | 2018 |
| Location | Population | Year |
|---|---|---|
| Audrain County | 24,982 | 2023 |
| Boone County | 192,154 | 2025 |
| Greene County | 293,086 | 2020 |
| Mississippi County | 12,538 | 2024 |
| Montgomery County | 11,415 | 2023 |
| St. Louis County | 998,692 | 2019 |
| Scott County | 37,840 | 2023 |
| Warren County | 37,260 | 2024 |
| Location | Population | Year |
|---|---|---|
| Butte-Silver Bow County | 34,993 | 2018 |
| Cascade County | 81,366 | 2020 |
| Flathead County | 103,806 | 2019 |
| Lake County | 30,250 | 2018 |
| Lewis and Clark County | 69,432 | 2018 |
| Missoula County | 119,600 | 2018 |
| Ravalli County | 45,959 | 2022 |
| Yellowstone County | 161,300 | 2018 |
| Location | Population | Year |
|---|---|---|
| Douglas County | 585,008 | 2022 |
| Location | Population | Year |
|---|---|---|
| Strafford County | 134,202 | 2024 |
| Location | Population | Year |
|---|---|---|
| State of New Jersey | 9,000,000 | 2017 |
| Location | Population | Year |
|---|---|---|
| Bernalillo County | 679,121 | 2017 |
| Cibola County | 27,184 | 2023 |
| Dona Ana County | 218,195 | 2021 |
| Grant County | 26,998 | 2021 |
| Guadalupe County | 4,449 | 2023 |
| Hidalgo County | 4,178 | 2021 |
| Los Alamos County | 19,330 | 2023 |
| Luna County | 23,709 | 2021 |
| McKinley County | 71,780 | 2023 |
| Rio Arriba County | 40,179 | 2023 |
| San Juan County | 123,958 | 2020 |
| San Miguel County | 27,150 | 2023 |
| Sandoval County | 146,749 | 2020 |
| Sante Fe County | 155,201 | 2023 |
| Valencia County | 77,190 | 2023 |
| Location | Population | Year |
|---|---|---|
| Buncombe County | 261,191 | 2020 |
| Chatham County | 79,864 | 2024 |
| Durham County | 326,126 | 2020 |
| Mecklenburg County | 1,000,000 | 2014 |
| New Hanover County | 243,333 | 2024 |
| Wake County | 1,112,000 | 2022 |
| Location | Population | Year |
|---|---|---|
| Cleveland (City) | 386,000 | 2017 |
| Franklin County | 1,321,000 | 2024 |
| Lucas County | 431,000 | 2015 |
| Stark County | 372,542 | 2014 |
| Youngstown (City) | 60,270 | 2022 |
| Location | Population | Year |
|---|---|---|
| Multnomah County | 803,377 | 2023 |
| Location | Population | Year |
|---|---|---|
| Allegheny County | 1,200,000 | 2016 |
| Montgomery County | 830,915 | 2021 |
| Location | Population | Year |
|---|---|---|
| Minnehaha County | 189,000 | 2018 |
| Pennington County | 110,000 | 2018 |
| Location | Population | Year |
|---|---|---|
| Hamilton County | 367,804 | 2019 |
| Shelby County | 937,166 | 2019 |
| Location | Population | Year |
|---|---|---|
| Dallas County | 2,636,000 | 2020 |
| Harris County | 4,700,000 | 2017 |
| Tarrant County | 874,401 | 2021 |
| Williamson County | 590,551 | 2021 |
| Location | Population | Year |
|---|---|---|
| State of Utah | 3,100,000 | 2018 |
| Location | Population | Year |
|---|---|---|
| Augusta County | 78,064 | 2024 |
| Prince William County | 486,943 | 2024 |
| Richmond (City) | 229,395 | 2024 |
| Staunton (City) | 25,904 | 2024 |
| Waynesboro (City) | 22,808 | 2024 |
| Location | Population | Year |
|---|---|---|
| Clark County | 474,492 | 2019 |
| Pierce County | 925,708 | 2022 |
| Spokane County | 506,000 | 2019 |
| Thurston County | 297,977 | 2023 |
| Whatcom County | 229,247 | 2021 |
| Yakima County | 250,000 | 2016 |
| Location | Population | Year |
|---|---|---|
| Brown County | 264,542 | 2019 |
| Chippewa County | 64,658 | 2020 |
| Dane County | 536,000 | 2017 |
| Dunn County | 45,651 | 2023 |
| Eau Claire County | 104,646 | 2020 |
| La Crosse County | 118,016 | 2019 |
| Marathon County | 135,692 | 2021 |
| Milwaukee County | 952,000 | 2016 |
| Outagamie County | 186,000 | 2019 |
| Polk County | 45,709 | 2022 |
| Rock County | 163,354 | 2020 |
| St. Croix County | 95,044 | 2023 |
| Waukesha County | 404,198 | 2020 |
More on the PSA
About the PSA
Learn how the PSA can enhance pretrial outcomes when implemented with fidelity.
How It Works
The PSA factors and algorithm are publicly available here.
PSA Guides
The guides provide all the information needed to implement the PSA.
PSA Research
Read the studies that evaluate and validate the PSA.