Heritage Lake is a community in Hendricks County, Indiana, home to about 3,227 people across 3.0 square miles. Its ZIP code is 46121, and parts of 46128 are in Heritage Lake too.
Homes sold for a median of $214 per square foot in the three months ending August 2026, a seller’s market.
Mostly Heritage Lake; also Coatesville and Amo
Mostly Fillmore; part is in Heritage Lake
Each card is that ZIP code’s whole market, including any part outside Heritage Lake. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Heritage Lake’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Indianapolis International Airport (IND)21 miles away |
|---|---|
| Nearest city of 250,000+ | Indianapolis, IN29 miles away |
| Nearest city of 1 million+ | Chicago, IL158 miles away |
Straight-line distances from the center of Heritage Lake; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Heritage Lake had 3,012 residents in the 2020 census, up 5% since 2010.
It’s the 168th largest of 693 towns in Indiana by population.
Hendricks County grew from 21,292 residents in 1900 to 174,788 in 2020.
Hendricks County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 83°F in summer, and winter lows average 17°F. About 46.3 inches of rain and melted snow fall in a typical year, with about 22 inches of snow.
Source: NOAA 1991–2020 climate normals, Greencastle 1 W, IN weather station (10 miles away).
74,107 jobs at 3,860 businesses in Hendricks County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
4 doctors and other health care providers list an office in Heritage Lake.
Nearest hospitals
Providers with an office here
| Primary care doctors | 1 |
|---|---|
| Physical and occupational therapists | 3 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Grocery stores (1 nearby)
Counts are within about 1.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
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Shares ZIP codes with Fillmore, Coatesville and Amo.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.