Residential delivery area · Indiana
ZIP Code 46181: Trafalgar, IN
ZIP code 46181 uses the postal name Trafalgar, Indiana and lies mostly in Johnson County (85% of its land) with the rest in Brown County (Census 2020 ZIP-county file). About 5,000 people live there (Census Bureau, ACS 2020-2024). Median household income is $91,337 (Census Bureau, ACS 2020-2024). By Census place, 6% of its land lies in Trafalgar; 94% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Trafalgar · its only residential ZIP
- County
- Johnson County (85%); Brown County (15%)
- Census places
- Trafalgar
- Metro area
- Indianapolis-Carmel-Greenwood, IN
- House districts
- IN-6 (85%), IN-9 (15%) 119th Congress, by share of land
- State
- Indiana
- Time zone
- Eastern
- Land area
- 45.5 sq mi · 109 people per sq mi
Where is ZIP code 46181?
46181 centers on 39.372°, -86.172° and covers 45.5 square miles of land plus 0.5 of water. It borders 5 ZIP codes: 46160, 46164, 46131, 46124, 47448.
The map draws ZIP code areas only. For the streets inside 46181, open its center on OpenStreetMap.
Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries and the 2023 Gazetteer (2020 ZCTAs); ZIP-to-county shares, Census places and House districts (119th Congress) from the Census 2020 relationship files (shares of land); metro area from the OMB delineation (July 2023); town name and time zone from simplemaps US ZIP Codes (CC BY 4.0).
How does 46181 compare with the rest of Johnson County?
| Measure | 46181 | In Johnson County | In IN |
|---|---|---|---|
| People (ACS 2020-2024) | 4,964 | 9th of 11 | 303rd of 807 |
| Median household income | $91k | 5th of 10 | 72nd of 478 |
| Median home value | $314k | 4th of 10 | 48th of 509 |
Its median household income is higher than in 74% of U.S. residential ZIP codes, and it is denser than 55% of all U.S. residential ZIP codes. ZIP codes at the ACS caps ($250,000 or more for household income, $2,000,000 or more for home value) share the top rank.
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B19013, B25077); ranks by PlainZIP over residential ZIP codes (ZCTAs).
How many people live in 46181?
The 2020 Census counted 5,280 people in 46181; the ACS, which samples households over 2020-2024, estimates 4,964. Between the 2010 and 2020 censuses its population grew 9.3% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 4,964±501 (90% margin)
- 2020 Census count
- 5,280+9.3% since 2010 (4,832)
- Households
- 1,862
- Median age
- 41.3
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01003, B01002, B11001); 2020 Census (DHC P1); 2010 Census (SF1 P1).
Who lives in 46181?
Of the 4,964 people the ACS estimates in 46181, 25.3% are under 18 and 16.8% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (97.6%).
- Under 1825.3%
- 18 to 6457.9%
- 65 and older16.8%
- White, not Hispanic97.6%
- Other or two or more1.6%
- Hispanic or Latino0.5%
- Asian, not Hispanic0.3%
- Black, not Hispanic0.0%
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B01001 age by sex, B03002 Hispanic or Latino origin by race); shares of the estimated population, small ZIP codes carry wide margins.
What do households in 46181 earn?
Median household income is $91,337 (ACS 2020-2024), the 5th highest of the 10 ranked ZIP codes in Johnson County. It is not measurably different from 2015-2019 ($92,408 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $91,337±$9,329
- Income per person
- $48,926
- Below the poverty line
- 2.6%
- Unemployed (of the labor force)
- 5.7%
- Adults 25+ with a bachelor's degree
- 30.9%
- Adjusted gross income per tax return, 2022
- $95,2032,670 returns; wages 65% of AGI (IRS)
Source: U.S. Census Bureau, ACS 2020-2024 and 2015-2019 5-year estimates (B19013, B19301, B17001, B23025, B15003; 2015-2019 dollars converted with the BLS CPI-U, 1.22699); IRS Statistics of Income, ZIP code data, tax year 2022 (adjusted gross income per return, filed under the address on the return).
What are homes worth in 46181?
FHFA's house price index for 46181, built from repeat sales and appraisals of the same homes, rose 92% from 2015 to 2025 and rose 52% from 2020 to 2025, and moved +3.7% in 2025.
- Median home value (owners' estimate)
- $314,300
- Median gross rent
- $951
- Homes owned by their occupants
- 89.7%
- Housing units
- 1,911
Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B25077, B25064, B25003, B25001); FHFA House Price Index, annual five-digit ZIP, updated 2026-03-31.
What businesses are in 46181?
107 business establishments had a location in this ZIP code in 2023, 8 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction32
- Retail trade12
- Health care and social assistance11
- Accommodation and food services10
- Administrative and support and waste management and remediation services9
- Other services (except public administration)9
Source: U.S. Census Bureau, ZIP Code Business Patterns 2023 and 2018 (establishments with paid employees, by the business's ZIP code).
Which ZIP codes are next to 46181?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 46160 | Morgantown | 6,514 | $76k | 5.4 mi |
| 46164 | Nineveh | 3,840 | $86k | 5.5 mi |
| 46131 | Franklin | 34,647 | $85k | 9.8 mi |
| 46124 | Edinburgh | 7,304 | $65k | 12.0 mi |
| 47448 | Nashville | 8,117 | $73k | 13.7 mi |
| 46106 | Bargersville | 10,159 | $120k | 9.9 mi (near) |
| 47435 | Helmsburg | 137 | – | 9.9 mi (near) |
| 47280 | Taylorsville | 1,248 | – | 12.9 mi (near) |
| 47468 | Unionville | 1,303 | $93k | 13.2 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.