Jefferson County, Idaho
23 public bodies govern here, 1 school district is based here, and USDA lists 0 farmers markets. Everything below says where it came from.
In four numbers
- People
- 33,154
- Median household income
- $86,679
- ±3,818
- Unemployed
- 2.7%
- 423 of 15,752 in the labour force
- Homes with broadband
- 95.0%
- 9,687 of 10,199 households
U.S. Census Bureau, American Community Survey 5-year estimates 2020-2024; read 2026-09-26. Percentages worked out here from the two counts shown.
Who governs here
County government 1
| Name | People | Office | Website |
|---|---|---|---|
| County of Jefferson | 32,202 (2021) | 210 Courthouse Way, Rigby | Website |
Cities, towns and villages 6
| Name | People | Office | Website |
|---|---|---|---|
| City of Lewisville | 426 (2021) | Po Box 160, Lewisville | — |
| City of Menan | 723 (2021) | Po Box 127, Menan | — |
| City of MUD Lake | 330 (2021) | Po Box 56, Terreton | — |
| City of Rigby | 5,241 (2021) | 158 W Fremont Ave, Rigby | Website |
| City of Ririe | 694 (2021) | Po Box 68, Ririe | — |
| City of Roberts | 539 (2021) | Po Box 242, Roberts | — |
Special districts 16
| Name | What it does | Office | Website |
|---|---|---|---|
| Lewisville Cemetery District | Cemeteries | Po Box 96, Lewisville | — |
| Little Butte Cemetery District | Cemeteries | 3883 E Menan Lorenzo Hwy, Rigby | — |
| Pioneer Cemetery District- Jefferson | Cemeteries | Po Box 76, Rigby | — |
| Ririe-Shelton Cemetery District | Cemeteries | Po Box 301, Ririe | — |
| Roberts Cemetery District | Cemeteries | Po Box 234, Roberts | — |
| West Jefferson Memorial Cemetery District | Cemeteries | 1052 E 1510 N, Terreton | — |
| Flood Control District 1 - Snake River | Flood control | 3817 E 200 N, Rigby | — |
| Jefferson County Levee District 1 | Flood control | 1643 E 1600 N, Terreton | — |
| MUD Lake Flood Control District 5 | Flood control | 1698 N 1300 E, Terreton | — |
| Jefferson Free Library District | Libraries | Po Box 198, Menan | Website |
| Central Fire District | Local fire protection | Po Box 217, Rigby | Website |
| Hamer Fire Protection District | Local fire protection | 2514 E 2200 N, Hamer | — |
| Roberts Fire Protection District | Local fire protection | Po Box 284, Roberts | — |
| West Jefferson Fire Control District | Local fire protection | 1556 N 1000 E, Terreton | — |
| M & T Water and Sewer District | Sewerage and water supply | Po Box 131, Terreton | — |
| Jefferson Soil Conservation District | Soil and water conservation | 210 S 5th W, Rigby | Website |
U.S. Census Bureau, 2022 Census of Governments, Government Units List (published August 2023); the file read 2026-09-26. Offices are placed by county; a special district’s territory can cross county lines. Each body posts its own meetings on its website where the Census records one.
School districts based here
JEFFERSON COUNTY JOINT DISTRICT
School district11 schools
3850 E 300 N, Rigby, ID, 83442
National Center for Education Statistics, Common Core of Data 2024-25; read 2026-09-26.
Farmers markets
USDA’s directory lists no farmers market in this county. That is not the same as there being none: a market that never registered with USDA, and was not found by its 2023 web sweep, is not in the directory.
In the counties that border this one
Farmers Market @ Liberty Square in Ammon (2475 S. Ammon Rd. Ammon) · Idaho Falls Farmers' Market (Idaho Falls)
Henry's Fork Farmers' Market in Ashton (Ashton)
Which counties border which: U.S. Census Bureau, County Adjacency File (2024), the file read 2026-09-26. Bordering is not distance — counties that touch at one corner border each other.
USDA National Farmers Market Directory; read 2026-09-26.