| ZIP Codes: | 10 ZIP Codes (9 Standard, 1 PO Box, 0 Unique) [See All] |
| Area Codes: | 317 / 463 / 765 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:12:06 PM |
| Population: | 160,416 [See All] |
| FIPS: | 18063 |
| CBSA: | Indianapolis-Carmel-Greenwood, IN |
| Land Area: | 373 sq mi |
| Water Area: | 1 sq mi |
| Coordinates: | 39.7621, -86.5124 |
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160,416 residents live across 10 ZIPs covering 373 sq mi, served by 10 distinct USPS-recognized cities.
Population moved from 129,959 to 160,416 from 2014 to 2024 — a +23.4% change. 8 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 46167 (Pittsboro, $122,723 median) and poorest ZIP 46118 (Clayton, $78,298) are 15.8 miles apart — a 1.6× income gap across local geography.
Median home values vary 1.5× across this county — from $228,600 in 46180 (Stilesville) to $346,500 in 46165 (North Salem).
Density varies 33× across the county — from 45 people/sq mi in 46180 (Stilesville) to 1,514 in 46123 (Avon).
Educational attainment ranges from 19.9% bachelor's+ in 46118 (Clayton) to 48.9% in 46112 (Brownsburg) — the breadth of educational profiles across the area.
Within Indiana, this is the #11 most populous of 92 counties and ranks #6 for median household income with the #3 fastest decade growth .
Weighted by population, the typical household earns about $101,897 across the county — reflecting what a typical resident sees, not a simple ZIP average.
39.8% of adults age 25+ hold a bachelor's degree or higher (43,216 of 108,457 reporting).
9 Standard delivery, 1 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 46112 | Brownsburg | Standard | 44,220 | $112,565 | 42.9 | 29.8% |
| 46123 | Avon | Standard | 43,353 | $103,485 | 28.6 | 33.2% |
| 46168 | Plainfield | Standard | 38,826 | $90,000 | 36.0 | 20.9% |
| 46122 | Danville | Standard | 16,974 | $99,531 | 90.2 | 15.4% |
| 46167 | Pittsboro | Standard | 6,944 | $122,723 | 29.0 | 8.7% |
| 46118 | Clayton | Standard | 4,709 | $78,298 | 53.4 | -7.8% |
| 46165 | North Salem | Standard | 1,992 | $86,488 | 41.5 | 53.1% |
| 46149 | Lizton | Standard | 1,952 | $88,750 | 27.0 | -20.3% |
| 46180 | Stilesville | Standard | 1,085 | $90,208 | 23.9 | 2.6% |
| 46103 | Amo | PO Box | 361 | $93,750 | 0.5 | 68.7% |