| Rhea Mills | |
| Settlement Type: | Unincorporated place |
| Pushpin Map: | Texas#USA |
| Pushpin Label: | Rhea Mills |
| Pushpin Label Position: | bottom |
| Pushpin Map Caption: | Location within the state of Texas |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Texas |
| Subdivision Type2: | Counties |
| Subdivision Name2: | Collin |
| Unit Pref: | Imperial |
| Area Water Sq Mi: | 0.0 |
| Population As Of: | 2000 |
| Population Total: | 47 |
| Timezone: | Central (CST) |
| Utc Offset: | -6 |
| Timezone Dst: | CDT |
| Utc Offset Dst: | -5 |
| Elevation M: | 222.5 |
| Elevation Ft: | 730 |
| Coordinates: | 33.2622°N -96.7328°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 75078 |
| Area Code: | 214, 469, 972 |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 1380436 |
Rhea Mills is an unincorporated farming community in Collin County, Texas, United States. According to the Handbook of Texas, the community had a population of 47 in 2000. It is located within the Dallas-Fort Worth Metroplex.
The area in what is known as Rhea Mills today was first settled in 1857. W.A. and J.C. Rhea built a flour and cornmill here. It was originally named Rhea's Mills, but it was changed to simply Rhea Mills in early 1982. A post office was established at Rhea Mills in 1876 and remained in operation until 1907 when mail was rerouted from McKinney. It has served as a trade and supply center for local farmers for most of its existence. It has never had more than 100 people since 1990, and from 1942 through that year, its population was less than 50. It went down to 47 in 2000.
On April 22, 1968, an F1 tornado struck Rhea Mills.
Rhea Mills is located at the intersection of Farm to Market Roads 2478 and 1461, 6miles northwest of McKinney in northwestern Collin County.
Today the community is served by the Prosper Independent School District. It is zoned for Cynthia A. Cockrell and Mike and Janie Reeves Elementary Schools, Lorene Rogers Middle School, and Prosper High School.