Natrona County
80,526 people, served by 4 police agencies that report to the FBI.
How a case moves here
Natrona County follows Wyoming law on arrests, release, and courts. These rules are the same in every county in the state; the full set covers prosecutors, defense, and jails too.
- Who decides release first
A judicial officer, most often a circuit judge or circuit court magistrate, sets release at the initial appearance. For misdemeanors listed on the Supreme Court's bond schedule, a person may pay the scheduled amount without seeing a judge, and a person arrested for one must see a judicial officer within 12 hours or be cited and released.
W.R.Cr.P. 1, 3.1, 5, 46.1 and Uniform Bail and Forfeiture Schedule (2026 compilation)- Time to see a judge
An arrested person must be taken before a judicial officer without unnecessary delay, and a person arrested without a warrant must be released unless a judicial officer finds probable cause within 72 hours. A jailed person who asks in writing for release must get a decision within 72 hours.
W.R.Cr.P. 5(a), 46.1(a)(1)- Money bail
Money bail is allowed. Everyone is bailable by sufficient sureties except in capital cases where the proof is evident or the presumption great.
W.R.Cr.P. 46.1(a)- Courts
District courts try felonies. Circuit courts hear misdemeanors and hold preliminary hearings in felony cases, and each city or town has a municipal court for violations of its ordinances.
Wyoming Judicial Branch, District CourtsWyoming Judicial Branch, Circuit CourtsW.S. 5-6-101- Judges and magistrates
The governor appoints district judges from three names sent by the Judicial Nominating Commission, and voters then decide in retention elections whether to keep them for six-year terms. Circuit judges are chosen the same way for four-year terms and must be lawyers. Circuit judges appoint magistrates with county approval, and part-time magistrates need no legal training.
Wyoming Judicial Branch, District CourtsWyoming Judicial Branch, Circuit CourtsW.S. 5-9-201 to 5-9-206, 5-6-103
Read from the statutes and court rules cited, 2026-09-30. The pretrial section rests on a secondary summary. Which counties currently have a district attorney was not checked.
What this county does differently
Nothing county-specific yet
Cities and towns
- Casper58,839
- Mills town4,390
- Bar Nunn town3,008
- Evansville town2,779
- Midwest town267
- Edgerton town87
Every city, village, town, and township with any of its land in Natrona County, largest first. Population, the whole place's: Census Bureau American Community Survey 5-year estimates, 2020 to 2024.
Police agencies
- Casper Police DepartmentCity police department58,701 served
- Natrona County Sheriff's OfficeSheriff or county police14,010 served
- Mills Police DepartmentCity police department4,678 served
- Evansville Police DepartmentCity police department2,852 served
Agencies: FBI NIBRS master file 2025 batch headers; names from the FBI agency list, pulled 2026-09-29. An agency that serves several counties appears on each. Population served is the FBI's figure.
Crime
The crime index
| Offense | 2021 | 2022 | 2023 | 2024 | 2025 | Per 100k | Wyoming |
|---|---|---|---|---|---|---|---|
| Violent crime | 26 | 28 | 174 | 186 | 213 | 224 | 208 |
| Murder | 2 | 2 | 4 | 1 | Too few for a rate: the count is under 20. | 3 | |
| Rape | 11 | 6 | 41 | 44 | 40 | 51 | 58 |
| Robbery | 16 | 9 | 7 | Too few for a rate: the count is under 20. | 9.6 | ||
| Aggravated assault | 15 | 20 | 115 | 129 | 165 | 159 | 137 |
| Property crime | 277 | 212 | 1,679 | 1,354 | 1,134 | 1,666 | 1,398 |
| Burglary | 49 | 21 | 163 | 156 | 141 | 190 | 195 |
| Larceny | 193 | 161 | 1,337 | 1,077 | 927 | 1,322 | 1,071 |
| Motor vehicle theft | 35 | 30 | 179 | 121 | 66 | 154 | 132 |
| Arson | 2 | 1 | 5 | 5 | 13 | 9.3 | 8.1 |
Outside the crime index
| Offense | 2021 | 2022 | 2023 | 2024 | 2025 | Per 100k | Wyoming |
|---|---|---|---|---|---|---|---|
| All offenses outside the crime index | 377 | 321 | 2,685 | 2,736 | 2,784 | 3,186 | 2,978 |
| Simple assault and intimidation | 162 | 112 | 737 | 680 | 765 | 879 | 1,010 |
| Vandalism | 48 | 29 | 443 | 507 | 399 | 510 | 490 |
| Fraud | 47 | 49 | 435 | 562 | 653 | 625 | 283 |
| Drug abuse violations | 97 | 103 | 750 | 732 | 653 | 836 | 945 |
| Weapons: carrying, possessing, etc. | 3 | 42 | 27 | 60 | Too few for a rate: the count is under 20. | 45 | |
| Stolen property: buying, receiving, possessing | 28 | 16 | 16 | Too few for a rate: the count is under 20. | 6.4 | ||
| Forgery and counterfeiting | 3 | 60 | 67 | 64 | Too few for a rate: the count is under 20. | 52 | |
| Embezzlement | 1 | 1 | 18 | 15 | 25 | 21 | 5.5 |
| Sex offenses (except rape and prostitution) | 14 | 22 | 65 | 44 | 59 | 73 | 50 |
| Prostitution and commercialized vice | 1 | 8 | 3 | 2 | Too few for a rate: the count is under 20. | 2.6 | |
| Other Group A offenses | 4 | 2 | 99 | 83 | 88 | 99 | 89 |
| Manslaughter by negligence (not in the total) | 2 | 3 | 3 | Too few for a rate: the count is under 20. | 2.2 |
Offenses agencies in Natrona County reported to the FBI in incident detail (NIBRS), each year, the second table by the arrest class each offense falls in. Per 100k: offenses per 100,000 people the reporting agencies police, 2021 to 2025 added together, beside Wyoming's rate over the same years. Agencies that reported part of a year are counted with their people, as the state's rates count them. – means too few for a rate: the count is under 20.
Source: FBI NIBRS national master files, each agency's offenses and the FBI's population for it. Wyoming: the crime index: FBI Uniform Crime Reporting, CrimeDB's chosen value per year (the state page's figures); outside it: FBI NIBRS, agencies that sent incident detail.