| Official Name: | Roy, Montana |
| Settlement Type: | Census-Designated Place |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Montana |
| Subdivision Type2: | County |
| Subdivision Name2: | Fergus |
| Unit Pref: | Imperial |
| Area Footnotes: | [1] |
| Area Total Km2: | 8.82 |
| Area Land Km2: | 8.82 |
| Area Water Km2: | 0.00 |
| Area Total Sq Mi: | 3.40 |
| Area Land Sq Mi: | 3.40 |
| Area Water Sq Mi: | 0.00 |
| Population As Of: | 2020 |
| Population Total: | 96 |
| Population Density Km2: | 10.89 |
| Population Density Sq Mi: | 28.20 |
| Blank Name: | FIPS code |
| Blank Info: | 30-64675 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 775990 |
Roy is a census-designated place (CDP) in Fergus County, Montana, United States.
The community is located along U.S. Route 191 in northeastern Fergus County, 35miles northeast of Lewistown. Roy has a post office with the ZIP code 59471.[2] As of the census[3] of 2010, there were 108 people.
The post office opened in 1892. The Milwaukee Land Company platted the townsite in 1913.[4]
Roy has a semi-arid climate (Köppen BSk) with cold winters except when moderated by chinook influences that will typically push maximum temperatures over 50F on seventeen days during winter and twelve days each in November and March. Spring is mild and frequently thundery, whilst summer days are hot – sometimes very hot – but nights are usually pleasantly cool.
Precipitation is fairly scarce, mostly coming from thunderstorms during late spring and summer, whilst snowfall averages 432NaN2 (the median is 30.92NaN2) but significant falls occur on only a minority of winter days. However, during the cold winter of 1977–78, cover reached 562NaN2 on February 19 and averaged 462NaN2 for the whole month of February.
Roy Public Schools educates students from kindergarten through 12th grade.[5] Roy High School's team name is the Pirates.[6]