County · code 16065
Madison CountyIdaho
Madison County is a county in Idaho with its seat in Rexburg, formed in 1913.
- Founded1913
- County seatRexburg
- Named forJames Madison
- Land area469 sq mi + 4.1 sq mi water
- Population52,913 2020 Census
- Parcels mapped17,764 checked 16 October 2026
Where it is
Madison on the map of Idaho
Idaho has 44 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1913 from Fremont County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Madison County was created from Fremont County on November 4, 1913, through a vote in the general election that year. The county was named after James Madison. In 1915, Madison County lost territory to the creation of Teton County.
- 1913Madison County created Madison created from Fremont. Act approved 18 February 1913, became effective through a vote in the general election of 4 November 1913. · Id. Laws 1913, 12th sess., ch. 26/pp. 107-121; Id. Code Ann. (1996), vol. 6, ch. 1, sec. 31-135 "Madison Co."/pp. 46; Nelson and Webbert, p. 100
- 1915Lost territory Madison lost to creation of Teton. · Id. Laws 1915, 13th sess., ch. 28/pp. 29-30
Land and parcels
What the maps cover in Madison
Who publishes each layer, how good it is, and when we last checked.
-
Parcels Good enough
Lot lines and tax-map numbers for 17,764 parcels from Madison County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Good enough
One point per address, 9,465 in all from Madison County.
checked 20 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Madison by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Who to ask before you build, dig or sell
Official county pages only. We link to them; we do not copy them, because they change.
Inside a city or town, permits usually come from that city rather than the county.
Zoning and code
County government
- County government
The official website of Madison County.
See your own lot on these maps
Open Madison County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Madison County
- When was Madison County founded?
- Madison County was founded in 1913, formed from Fremont County, and named after James Madison.
- What is the county seat of Madison County?
- The county seat of Madison County is Rexburg.
- Is there an online parcel map for Madison County?
- Yes. Madison County publishes a parcel map of 17,764 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Madison County's boundary or name changed?
- Madison County was created in 1913 from Fremont County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Teton County.
- Is my lot in a flood zone?
- We do not have flood maps for Madison County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby