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US ZIP Code Profile

ZIP Code 46203
Indianapolis, Indiana

ZIP code 46203 is in Indianapolis, located in Marion County, Indiana, within the Indianapolis-Carmel-Anderson metro area. Its 2020 Census population was 38,224. The estimated median adjusted gross income per tax return is $38,643, and about 3% of filers report $200,000 or more.

2020 Population
38,224
Census ZCTA
County
Marion
FIPS 18097
Median income (est.)
$38,643
IRS SOI 2022
Land Area
13.842 mi²
+ 0 mi² water

01Location & Geography

Authoritative geographic identifiers from the U.S. Census Bureau, ANSI, and FIPS standards.

Primary CityIndianapolis, IN
CountyMarion County (FIPS 18097)
StateIndiana (FIPS 18)
Metro Area (MSA)Indianapolis-Carmel-Anderson, IN Metro Area (26900)
Census Region / DivisionMidwest Region · East North Central Division
Coordinates39.737606, -86.09694
Land / Water Area13.842 mi² land · 0 mi² water

02Income & Economics

Distribution of the 17,570 individual tax returns filed in 46203 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
33.4%
$25K–$50K
30.5%
$50K–$75K
16.5%
$75K–$100K
7.7%
$100K–$200K
9.3%
$200K+
2.6%
The $200,000+ bracket accounts for 19% of 46203's total adjusted gross income, from 3% of returns — a concentration that drives the gap between the median ($38,643) and the average.
Estimated median = median adjusted gross income per tax return, interpolated from IRS SOI brackets. Differs from U.S. Census household income.

03Income Over Time

Year-over-year change in 46203's IRS income metrics, 2020–2022.

Median income (2021→2022)
$38,643
▲ 9.1%
Filers earning $200K+
2.6%
▲ 0.4 pt
Total filers
17,570
▼ 1.2%
GET /zipc/v2/zipcodes/46203/soi?year=… $33K 2020 $35K 2021 $39K 2022
Median = adjusted gross income per return, interpolated from IRS SOI brackets. Figures are nominal (not inflation-adjusted).

04Population Trend

Decennial U.S. Census population for the 46203 ZCTA.

2000
40,433
 
2010
38,950
▼ -3.7%
2020
38,224
▼ -1.9%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 46203. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 46203

Indianapolis and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 46203 to any ZIP

Enter a 5-digit ZIP to calculate the distance.

06USPS Postal Details

Delivery and facility attributes from the monthly USPS dataset.

ZIP ClassificationNon-Unique Zip
Facility TypePost Office
Carrier Route SortD
USPS Finance Number174037
City AliasesIndianapolis

07Frequently Asked Questions

What county is ZIP code 46203 in?

ZIP code 46203 is in Marion County, Indiana (county FIPS code 18097).

What city is ZIP code 46203?

The primary USPS city for 46203 is Indianapolis, IN.

What metro area (MSA) is 46203 in?

46203 is part of the Indianapolis-Carmel-Anderson, IN Metro Area (MSA code 26900).

What is the population of ZIP code 46203?

The 2020 Census population of 46203 was 38,224 residents.

What is the median income in ZIP code 46203?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 46203 is about $38,643, with around 3% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.