Hendricks County is a county in Indiana, United States, on the west side of the Indianapolis metropolitan area. It had a population of 174,788 at the 2020 census and covers 406.91 square miles (1,053.9 km2) of land centred near 39°46′N 86°31′W.
Danville is the county seat and its postal code is 46122. The county has 11 incorporated cities and towns, a handful of small unincorporated communities, and 12 civil townships. Hendricks County sits in the Eastern time zone.
Towns & Villages in Hendricks County
Hendricks County has 11 incorporated cities and towns and a set of smaller unincorporated places. City/town figures below are 2020 census counts where confirmed; unincorporated places carry no official census total and are marked with an em dash.
| Place | Type | Township | Pop. | ZIP |
|---|---|---|---|---|
| Danville | Town · seat | Center | 10,559 | 46122 |
| Avon | Town | Washington | 21,474 | 46123 |
| Brownsburg | Town | Brown | 28,973 | 46112 |
| Plainfield | Town | Guilford | 34,625 | 46168 |
| Amo | Town | Franklin | — | 46103 |
| Clayton | Town | Liberty | — | 46118 |
| Coatesville | Town | Middle | — | 46121 |
| Lizton | Town | Union | — | 46149 |
| North Salem | Town | Marion | — | 46165 |
| Pittsboro | Town | Middle | — | 46167 |
| Stilesville | Town | Clay | — | 46180 |
| Belleville | Unincorp. | Center | — | — |
| Cartersburg | Unincorp. | Middle | — | — |
| Friendswood | Unincorp. | Franklin | — | — |
| Hadley | Unincorp. | Franklin | — | — |
| Hazelwood | Unincorp. | Guilford | — | — |
| Maplewood | Unincorp. | Washington | — | — |
| Montclair | Unincorp. | Brown | — | — |
| Reno | Unincorp. | Eel River | — | — |
A handful of names from older place lists for the county — such as Arborview MH Park, Big Four Yard, Center Valley, Clermont Heights, Clermont MH Park, Gale, Jamestown, Joppa, Lakeside, Magnetic Springs, New Winchester, North Belleville, Northwest Manor, Pecksburg, Raintown, Six Points, Springtown, Summit, Tilden, and Wynbrooke — could not be independently confirmed this pass and are omitted rather than published unverified.
Townships
| Township | Pop. (2020) | Main settlements |
|---|---|---|
| Washington | — | Avon, Maplewood |
| Brown | — | Brownsburg, Montclair |
| Guilford | — | Plainfield, Hazelwood |
| Center | — | Danville, Belleville |
| Middle | — | Pittsboro, Coatesville, Cartersburg |
| Liberty | — | Clayton |
| Franklin | — | Amo, Hadley, Friendswood |
| Union | — | Lizton |
| Clay | — | Stilesville |
| Marion | — | North Salem |
| Eel River | — | Reno |
| Lincoln | — | rural |
Township-level 2020 census figures were not verified this pass and are omitted rather than estimated; the county total above is confirmed.
ZIP Codes
- 46122 — Danville
- 46123 — Avon
- 46112 — Brownsburg
- 46168 — Plainfield
- 46103 — Amo
- 46118 — Clayton
- 46121 — Coatesville
- 46149 — Lizton
- 46165 — North Salem
- 46167 — Pittsboro
- 46180 — Stilesville
Unincorporated communities such as Belleville, Cartersburg, Friendswood, Hadley, Hazelwood, Maplewood, Montclair, and Reno are served by the ZIP code of the nearest incorporated town rather than a code of their own.
Geography
Hendricks County lies on gently rolling terrain given over mainly to agriculture and, closer to Indianapolis, suburban development. Its land area is 406.91 square miles (1,053.9 km2), with 1.87 square miles (4.8 km2) of water.
The county borders Boone County to the north, Marion County to the east, Morgan County to the south, Putnam County to the west, and Montgomery County to the northwest.
Demographics
Hendricks County had a population of 174,788 at the 2020 census, up from 145,448 in 2010 — the county was the second fastest-growing in Indiana over that decade. Plainfield (34,625) and Brownsburg (28,973) are its two largest communities, followed by Avon (21,474). Median household income runs above the Indiana median of $69,477, reflecting the county’s commuter-suburb economy, though a county-specific figure was not verified this pass. Population density is roughly 430 people per square mile.
Economy & Local Life
Plainfield anchors a major logistics and distribution hub tied to Indianapolis International Airport, which sits just across the Marion County line, with numerous warehouse and freight operations located along the Interstate 70 corridor. Avon and Brownsburg function primarily as Indianapolis-area suburbs with schools, retail centers, and residential growth driving local employment. Brownsburg is also home to Lucas Oil Indianapolis Raceway Park, drawing national NHRA drag-racing events each year.
History
Hendricks County was organized on December 20, 1823, and named for William Hendricks, Indiana’s second governor and a U.S. senator. Danville was platted soon after as the county seat. The county remained predominantly agricultural through the 19th and much of the 20th centuries before rapid suburban growth, driven by its position on Indianapolis’s western edge and along Interstates 70 and 74, transformed towns like Avon, Brownsburg, and Plainfield into some of the fastest-growing communities in the state.
Getting There
Interstates 65, 70, and 74 all cross the county, along with US Routes 36, 40, and 136. Hendricks County Airport (2R2) provides general aviation service near Danville.
- Indianapolis — 15 miles east
- Terre Haute — 45 miles west
- Lafayette — 45 miles north
- Bloomington — 40 miles south
Indianapolis International Airport, the nearest commercial airport, lies just east of the county line in Marion County.
Frequently Asked Questions
Where is Hendricks County?
It is in central Indiana, on the west side of the Indianapolis metropolitan area.
What is the population of Hendricks County?
174,788 at the 2020 census.
How big is Hendricks County?
406.91 square miles (1,053.9 km2) of land.
What is the county seat of Hendricks County?
Danville is the county seat.
How many towns are in Hendricks County?
11 incorporated cities and towns, plus several unincorporated communities.
What ZIP codes are in Hendricks County?
Codes include 46122 (Danville), 46123 (Avon), 46112 (Brownsburg), and 46168 (Plainfield), among others listed above.
Why is Brownsburg known for racing?
It is home to Lucas Oil Indianapolis Raceway Park, which hosts national NHRA drag-racing events.
More counties in this state: Towns and villages in Indiana.