Hanna, Wyoming

Hanna, Wyoming
Aerial view of Hanna and surrounding area
Location of Hanna in Carbon County, Wyoming.
Hanna, Wyoming
Hanna, Wyoming
Coordinates: 41°52′15″N 106°33′26″W / 41.87083°N 106.55722°W / 41.87083; -106.55722
CountryUnited States
StateWyoming
CountyCarbon
Government
 • MayorCharlie Gorge
Area
 • Total
2.05 sq mi (5.30 km2)
 • Land2.05 sq mi (5.30 km2)
 • Water0 sq mi (0.00 km2)
Elevation
6,818 ft (2,078 m)
Population
 (2020)
 • Total
683
 • Estimate 
(2025)
663
 • Density376/sq mi (145.2/km2)
Time zoneUTC-7 (Mountain (MST))
 • Summer (DST)UTC-6 (MDT)
ZIP code
82327
Area code307
FIPS code56-35335
GNIS feature ID1589288

Hanna is a town in Carbon County, Wyoming, United States. The population was 683 at the 2020 census. The town was started as a coal supply location for the Union Pacific Railroad. Much of the old town is built on top of the former workings of the Hanna No. 4 mine. On December 18, 1979, the Town of Hanna annexed the adjacent Town of Elmo. The population peaked at 2,288 in 1980 and has declined as local coal mines have ceased operation.