Residential delivery area · Wisconsin
ZIP Code 53018: Delafield, WI
ZIP code 53018 uses the postal name Delafield, Wisconsin and lies entirely in Waukesha County (Census 2020 ZIP-county file). About 8,200 people live there (Census Bureau, ACS 2020-2024). Median household income is $124,595 (Census Bureau, ACS 2020-2024). By Census place, 47% of its land lies in Delafield; 53% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Delafield · its only residential ZIP
- County
- Waukesha County
- Census places
- Delafield
- Metro area
- Milwaukee-Waukesha, WI
- House district
- WI-5 119th Congress
- State
- Wisconsin
- Time zone
- Central
- Land area
- 11.2 sq mi · 731 people per sq mi
Where is ZIP code 53018?
53018 centers on 43.048°, -88.391° and covers 11.2 square miles of land plus 1.2 of water. It borders 7 ZIP codes: 53183, 53058, 53188, 53072, 53066, 53029, 53118.
The map draws ZIP code areas only. For the streets inside 53018, 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 53018 compare with the rest of Waukesha County?
| Measure | 53018 | In Waukesha County | In WI |
|---|---|---|---|
| People (ACS 2020-2024) | 8,201 | 15th of 29 | 195th of 783 |
| Median household income | $125k | 6th of 26 | 14th of 610 |
| Median home value | $521k | 3rd of 26 | 6th of 612 |
Its median household income is higher than in 92% of U.S. residential ZIP codes, and it is denser than 75% 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 53018?
The 2020 Census counted 7,396 people in 53018; the ACS, which samples households over 2020-2024, estimates 8,201. Between the 2010 and 2020 censuses its population fell 6.4% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 8,201
- 2020 Census count
- 7,396−6.4% since 2010 (7,899)
- Households
- 3,401
- Median age
- 46.7
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 53018?
Of the 8,201 people the ACS estimates in 53018, 21.0% are under 18 and 21.3% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (85.1%).
- Under 1821.0%
- 18 to 6457.7%
- 65 and older21.3%
- White, not Hispanic85.1%
- Hispanic or Latino8.6%
- Other or two or more2.5%
- Black, not Hispanic2.5%
- Asian, not Hispanic1.2%
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 53018 earn?
Median household income is $124,595 (ACS 2020-2024), the 6th highest of the 26 ranked ZIP codes in Waukesha County. It is not measurably different from 2015-2019 ($124,789 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $124,595±$17,741
- Income per person
- $72,033
- Below the poverty line
- 3.7%
- Unemployed (of the labor force)
- 1.1%
- Adults 25+ with a bachelor's degree
- 54.5%
- Adjusted gross income per tax return, 2022
- $178,2303,860 returns; wages 56% 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 53018?
FHFA's house price index for 53018, built from repeat sales and appraisals of the same homes, rose 91% from 2015 to 2025 and rose 61% from 2020 to 2025, and moved +3.6% in 2025.
- Median home value (owners' estimate)
- $521,400
- Median gross rent
- $1,584
- Homes owned by their occupants
- 74.4%
- Housing units
- 3,605
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 53018?
402 business establishments had a location in this ZIP code in 2023, 43 more than in 2018; the most are in retail trade (ZIP Code Business Patterns).
- Retail trade62
- Accommodation and food services46
- Finance and insurance45
- Construction43
- Professional, scientific, and technical services42
- Other services (except public administration)40
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 53018?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 53183 | Wales | 3,111 | $109k | 3.1 mi |
| 53058 | Nashotah | 3,405 | $104k | 4.6 mi |
| 53188 | Waukesha | 34,892 | $92k | 5.2 mi |
| 53072 | Pewaukee | 26,200 | $99k | 6.6 mi |
| 53066 | Oconomowoc | 37,558 | $113k | 6.7 mi |
| 53029 | Hartland | 21,778 | $108k | 7.2 mi |
| 53118 | Dousman | 7,554 | $109k | 7.8 mi |
| 53069 | Okauchee | 671 | $131k | 4.9 mi (near) |
| 53127 | Genesee Depot | 79 | – | 6.4 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.