County · code 18101
Martin CountyIndiana
Martin County is a county in Indiana with its seat in Shoals, formed in 1820. The county was named after John T. Martin.
- Founded1820
- County seatShoals
- Named forJohn T. Martin
- Land area336 sq mi + 4.7 sq mi water
- Population9,812 2020 Census
- Parcels mapped10,334 checked 15 October 2026
Where it is
Martin on the map of Indiana
Indiana has 92 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1820 from Daviess County and Dubois County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Martin County was created from Daviess and Dubois counties in 1820. In 1828, the county gained additional land from Daviess County.
- 1820Martin County created Martin created from Daviess and Dubois. · Ind. Acts 1819, 4th sess., ch. 31, secs. 1-2/pp. 54-55 and ch. 63/p. 125
- 1828Gained territory Martin gained from Daviess. · Ind. Acts 1827, 12th sess., ch. 12, sec. 7/p. 17
Land and parcels
What the maps cover in Martin
Who publishes each layer, how good it is, and when we last checked.
-
Parcels Good enough
Lot lines and tax-map numbers for 10,334 parcels from Indiana Geographic Information Office (IndianaMap). Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 6 October 2026 · checked 15 October 2026 -
Address points Official
One point per address, 6,090 in all from Indiana Geographic Information Office (IGIO).
edited 8 March 2026 · checked 13 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
Martin 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
Martin County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Martin County.
See your own lot on these maps
Open Martin 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 Martin County
- When was Martin County founded?
- Martin County was founded in 1820, formed from Daviess County and Dubois County, and named after John T. Martin.
- What is the county seat of Martin County?
- The county seat of Martin County is Shoals.
- Is there an online parcel map for Martin County?
- Yes. Indiana Geographic Information Office (IndianaMap) publishes a parcel map of 10,334 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Martin County's boundary or name changed?
- Martin County was created in 1820 from Daviess County and Dubois County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Daviess County.
- Is my lot in a flood zone?
- We do not have flood maps for Martin County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby