Mills, Wyoming
11 topographic sheets cover this place, the earliest surveyed in 1951 and the latest in 1988. It stands in the Casper census division. It lies in ZIP code area 82644. It stands on Garden Creek. The Survey maps it on the Casper quadrangle. 4,034 people lived here at the 2020 count. It stands 5,125 feet above sea level.
On record in Mills
Buildings and businesses the archive holds for this place. Each opens its own page, with the source record it came from.
On the National Register within a mile 2 records
The National Register names another town for these. They stand within one mile of this settlement's coordinate.
Fort Casparlisted 1971 · 0.4 miles away- Fort Caspar (Boundary Increase)listed 1976 · 0.4 miles away
Population over time
2 figuresMills grew from 3,461 to 4,034 between 2010 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.
| Year | People | Change |
|---|---|---|
| 2010 | 3,461 | |
| 2020 | 4,034 | +573 (+17%) |
Topographic sheets covering this place
7 surveys from 11 printed sheetsMatched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.
- 1951 USGS Casper quadrangle1:24000, 2 printings
- 1955 USGS Casper quadrangle1:250000
- 1958 USGS Casper quadrangle1:250000, 2 printings
- 1961 USGS Casper quadrangle1:24000, 3 printings
- 1962 USGS Casper quadrangle1:250000
- 1979 USGS Casper quadrangle1:100000
- 1988 USGS Casper quadrangle1:250000
What the histories say of this town
1,733 words1 chapter about Mills from the published histories of the county, public domain and reproduced complete.
| Chapter | From | Length |
|---|---|---|
| History | History of Natrona County, Wyoming, 1888-1922; True Portrayal of the Yesterdays of a New County and a Typical Frontier Town of the Middle West. Fortunes and Misfortunes, Tragedies and Comedies, Struggles and Triumphs of the Pioneers .. (1923) | 1,733 words |
Fires near this place
187 since 1992Regional context, not property-specific evidence. The federal wildfire occurrence database lists 187 fires within 5 miles of Mills between 1992 and 2020, burning about 16,240 acres in total. 27 started naturally. 3 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Missing data/not specified/undetermined | 96 |
| Natural | 27 |
| Equipment and vehicle use | 11 |
| Fireworks | 11 |
| Smoking | 8 |
| Power generation/transmission/distribution | 8 |
| Debris and open burning | 7 |
| Misuse of fire by a minor | 7 |
| Railroad operations and maintenance | 6 |
| Arson/incendiarism | 3 |
| Recreation and ceremony | 2 |
| Firearms and explosives use | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 9 September 2017 | Recreation and ceremony | 1.0 acres | Natrona County | POWERLINE |
| 7 September 2019 | Natural | under an acre | Casper Field Office | COMPOST |
| 4 September 1992 | Missing data/not specified/undetermined | under an acre | Wyoming State Forestry | not named |
| 30 September 2018 | Equipment and vehicle use | 28 acres | Natrona County | POWER LINE |
| 26 September 2019 | Missing data/not specified/undetermined | under an acre | Casper Field Office | CY FIRE |
| 25 September 2020 | Missing data/not specified/undetermined | under an acre | Natrona County | MCKINLEY FIRE |
| 23 September 2005 | Missing data/not specified/undetermined | 1.0 acres | Wyoming State Forestry | not named |
| 23 September 2005 | Natural | under an acre | Wyoming State Forestry | not named |
Settlements close enough to share some of these fires:
Mines and quarries near this place
7 within 5 milesRegional context, not property-specific evidence. The federal mineral resources record lists 7 workings within 5 miles of Mills: 7 producers. All of them still produce. What was taken out: Sand and Gravel, Construction, Bentonite, Clay. Distance is straight-line from the map coordinates, so a quarry counted here may appear on a neighbouring settlement's page as well.
| Where | Site | Commodity | Status | Recorded |
|---|---|---|---|---|
| Midwest-Thoeming & Wakem | Clay | Producer | ||
| Benton Clay Co Mill | Bentonite | Producer | ||
| Boels-Rimrock Pit | Sand and Gravel, Construction | Producer | ||
| Casper Concrete Pit & Plant | Sand and Gravel, Construction | Producer | ||
| Hidebrand Pit | Sand and Gravel, Construction | Producer | ||
| Kaycee Clay Mine | Bentonite | Producer | ||
| Kaycee Mine | Bentonite | Producer |
Storms near this place
13 since 2005Regional context, not property-specific evidence. The National Weather Service names Mills in 13 storm reports between 2005 and 2025: 8 hail, 2 flash flood, 1 thunderstorm wind, 1 lightning. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| July 2007 | Flash Flood | Mills | $300,000 | Rainfall estimated by radar to be three inches or more fell in a swath from Emigrant Gap to Bar Nunn. The heavy rain caused flash flooding along Poison Spider Road and other nearby roads as culverts could not handle the large volume of water. Portions of a ranch along Poison Spider Road were under several feet of water. A mobile home park south of Bar Nunn was flooded as water flowed from surrounding higher terrain. The lower floor of the rural Poison Spider Elementary School sustained flood damage as the water poured in through several doorways. |
| May 2009 | Lightning | Mills | $150,000 | A lightning strike destroyed or damaged five oil tanks about 20 miles west of Casper near the intersection of county roads 201 and 210. The strike occurred about 1300MST blowing the lid off one tank containing about 400 barrels of crude oil. The fire quickly spread to a nearby tank and burning crude oil ignited the other tanks. Two additional propane tanks were burned but did not explode. A nearly century old storage building at the site was also completely destroyed. |
| July 2007 | Flash Flood | Mills | $50,000 | Flooding was reported along Poison Spider Road where water of one foot depth covered the road in four or five places. |
| August 2007 | Thunderstorm Wind | Mills | $1,000 | Power lines reported down at 6th Avenue and Poison Spider Road. |
| July 2025 | Hail | Mills | - | A trained spotter reported nickel size hail to the west of Mills. |
| June 2025 | Hail | Mills | - | The Natrona County Emergency Manager reported 2.25 inch hail to the northwest of Mills. |
| June 2025 | Hail | Mills | - | Trained spotters reported hail from the size of pennies to quarters from south of Mills to Casper Mountain. |
| May 2023 | Hail | Mills | - | A trained spotter reported quarter size hail to the west of Casper. |
| June 2011 | Funnel Cloud | Mills | - | Natrona County Dispatch forwarded two reports of funnel clouds west of Casper. Several other reports of cloud rotation were received. |
| June 2009 | Hail | Mills | - | Nickel sized hail was reported by a trained spotter. |
| May 2008 | Hail | Mills | - | Large hail of 1.25 inch diameter fell for several minutes at Poison Spider School. |
| May 2008 | Hail | Mills | - | Hail up to one inch in diameter fell along Poison Spider Road. |
| July 2005 | Hail | Mills | - | no account filed |
Nearest settlements
The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.
| Map | Place | Distance | Sheets |
|---|---|---|---|
| Midwest Heights | 1.0 miles | 11 | |
| Mountain View | 1.5 miles | 11 | |
| Paradise Valley | 2.3 miles | 11 | |
| Thorndale Acres | 3.1 miles | 11 | |
| Casper | 3.3 miles | 11 | |
| Hartrandt | 3.4 miles | 11 | |
| Allendale | 3.4 miles | 11 | |
| Red Buttes Village | 3.7 miles | 11 |
Elsewhere
Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.
| Wikipedia article on Mills | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q1028970 | The structured record the population and elevation above come from. Public domain (CC0). |
Provenance
This settlement is recorded in the Geographic Names Information System as feature 1591626. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Mines and quarries. USGS Mineral Resources Data System (MRDS) https://mrdata.usgs.gov/mrds/ A work of the United States government, no copyright under 17 U.S.C. 105.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.






