What is the county seat of Putnam County?

The county seat of Putnam County is Greencastle.

Is there an online parcel map for Putnam County?

Yes. Indiana Geographic Information Office (IndianaMap) publishes a parcel map of 25,913 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Putnam County's boundary or name changed?

Putnam County was created in 1822 from Owen County, Vigo County, Wabash County, Monroe County and Parke County. Since then the Atlas of Historical County Boundaries records 10 later changes, chiefly involving Wabash County, Carroll County and Hendricks County.

Is my lot in a flood zone?

We do not have flood maps for Putnam County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 18133

Putnam CountyIndiana

Putnam County is in Indiana, with its county seat at Greencastle. The county was formed on April 1, 1822, and named after Israel Putnam.

Founded1822
County seatGreencastle
Named forIsrael Putnam
Land area481 sq mi + 2.2 sq mi water
Population36,726 2020 Census
Parcels mapped25,913 checked 15 October 2026

Open the free map Click any parcel in Putnam County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 19 October 2026

Census outline · seat marked

History

Formed in 1822 from Owen County, Vigo County, Wabash County, Monroe County and Parke County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Putnam County was created on April 1, 1822, from Owen, Vigo, and parts of Wabash attached to Monroe and Parke. Between 1823 and 1830, the county lost territory to the formation of Montgomery, Hendricks, Clay, Tippecanoe, and Carroll counties, as well as to Parke County, in a series of boundary adjustments. In 1861, Putnam County gained territory from Morgan County.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

1822
Putnam County created Putnam created from Owen, Vigo, and from parts of Wabash New Purchase attached to Monroe and Parke. Part of Wabash New Purchase attached to Monroe was detached from that county and attached to Putnam for administrative and judicial purposes.
from Owen from Vigo from Wabash from Monroe from Parke
1 April 1822 · Ind. Acts 1821, 6th sess., ch. 36, secs. 1-2/p. 65 and ch. 61/p. 118
1822
Gained territory Putnam gained from parts of Wabash New Purchase attached to Parke and Putnam; exchanged with Owen; lost to Vigo.
from Wabash from Parke from Owen from Vigo
21 December 1822 · Ind. Acts 1822, 7th sess., ch. 5/p. 5
1823
Lost territory Putnam lost part of Wabash New Purchase attachment to creation of Montgomery.
to Wabash to Montgomery
1 March 1823 · Ind. Acts 1822, 7th sess., ch. 6, secs. 1-2/p. 7
1824
Lost territory Putnam lost to Parke.
to Parke
2 January 1824 · Ind. Acts 1823, 8th sess., spec., ch. 31, sec. 1/p. 53
1824
Lost territory Putnam lost part of Wabash New Purchase attachment to creation of Hendricks.
to Wabash to Hendricks
1 April 1824 · Ind. Rev. Laws 1824, ch. 19, sec. 1/p. 111

Show all 11 changes (6 more)

1822
Putnam County created Putnam created from Owen, Vigo, and from parts of Wabash New Purchase attached to Monroe and Parke. Part of Wabash New Purchase attached to Monroe was detached from that county and attached to Putnam for administrative and judicial purposes.
from Owen from Vigo from Wabash from Monroe from Parke
1 April 1822 · Ind. Acts 1821, 6th sess., ch. 36, secs. 1-2/p. 65 and ch. 61/p. 118
1822
Gained territory Putnam gained from parts of Wabash New Purchase attached to Parke and Putnam; exchanged with Owen; lost to Vigo.
from Wabash from Parke from Owen from Vigo
21 December 1822 · Ind. Acts 1822, 7th sess., ch. 5/p. 5
1823
Lost territory Putnam lost part of Wabash New Purchase attachment to creation of Montgomery.
to Wabash to Montgomery
1 March 1823 · Ind. Acts 1822, 7th sess., ch. 6, secs. 1-2/p. 7
1824
Lost territory Putnam lost to Parke.
to Parke
2 January 1824 · Ind. Acts 1823, 8th sess., spec., ch. 31, sec. 1/p. 53
1824
Lost territory Putnam lost part of Wabash New Purchase attachment to creation of Hendricks.
to Wabash to Hendricks
1 April 1824 · Ind. Rev. Laws 1824, ch. 19, sec. 1/p. 111
1825
Lost territory Putnam lost to creation of Clay.
to Clay
1 April 1825 · Ind. Acts 1825, 9th sess., ch. 15/p. 17
1826
Lost territory Putnam lost part of Wabash New Purchase attachment to creation of Tippecanoe.
to Wabash to Tippecanoe
1 March 1826 · Ind. Acts 1825, 10th sess., ch. 10/p. 14
1828
Changed Part of Wabash New Purchase was detached from Putnam and attached to Hendricks and Tippecanoe for administrative and judicial purposes.
Wabash Hendricks Tippecanoe
24 January 1828 · Ind. Acts 1827, 12th sess., ch. 10/p. 13
1828
Lost territory Putnam lost part of Wabash New Purchase attachment to creation of Carroll; a small piece of Wabash New Purchase was detached from Putnam and attached to Carroll for administrative and judicial purposes.
to Wabash to Carroll
1 April 1828 · Ind. Acts 1827, 12th sess., ch. 16/p. 21 and ch. 10, secs. 3, 6/p. 14
1830
Changed Wabash New Purchase was detached from Putnam and attached to Carroll for administrative and judicial purposes.
Wabash Carroll
31 July 1830 · Ind. Acts 1829, 14th sess., ch. 21/p. 26
1861
Gained territory Putnam gained from Morgan.
from Morgan
11 March 1861 · Ind. Acts 1861, 41st sess., reg., ch. 43/p. 98

Land and parcels

What the maps cover in Putnam

Who publishes each layer, how good it is, and when we last checked.

Parcels Good enough

Lot lines and tax-map numbers for 25,913 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, 18,123 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

Putnam by the Census

Population

36,726 2020 Census count

Housing units

14,946 2020 Census count

Land area

481 square miles

Water area

2.2 square miles

People per sq mi

76 population ÷ land area

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.

Records

Assessor and property records 765-653-4312from co.putnam.in.us · checked 13 October 2026

County government

County government
The official website of Putnam County.
co.putnam.in.us

See your own lot on these maps

Open Putnam 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.

Open the free map no sign-in Pro early access

Questions

Common questions about Putnam County

When was Putnam County founded?: Putnam County was founded in 1822, formed from Owen County, Vigo County, Wabash County, Monroe County and Parke County, and named after Israel Putnam.
What is the county seat of Putnam County?: The county seat of Putnam County is Greencastle.
Is there an online parcel map for Putnam County?: Yes. Indiana Geographic Information Office (IndianaMap) publishes a parcel map of 25,913 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Putnam County's boundary or name changed?: Putnam County was created in 1822 from Owen County, Vigo County, Wabash County, Monroe County and Parke County. Since then the Atlas of Historical County Boundaries records 10 later changes, chiefly involving Wabash County, Carroll County and Hendricks County.
Is my lot in a flood zone?: We do not have flood maps for Putnam County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby