Residential delivery area · Minnesota
ZIP Code 55388: Watertown, MN
ZIP code 55388 uses the postal name Watertown, Minnesota and lies mostly in Carver County (79% of its land), reaching into Wright County and Hennepin County (Census 2020 ZIP-county file). About 5,900 people live there (Census Bureau, ACS 2020-2024). Median household income is $99,375 (Census Bureau, ACS 2020-2024). By Census place, its land lies in Watertown (7%) and Minnetrista (5%); 88% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
- Town
- Watertown · its only residential ZIP
- County
- Carver County (79%); Wright County (16%); Hennepin County (5%)
- Census places
- Watertown (7%); Minnetrista (5%)
- Metro area
- Minneapolis-St. Paul-Bloomington, MN-WI
- House districts
- MN-6 (95%), MN-3 (5%) 119th Congress, by share of land
- State
- Minnesota
- Time zone
- Central
- Land area
- 37.6 sq mi · 157 people per sq mi
Where is ZIP code 55388?
55388 centers on 44.955°, -93.849° and covers 37.6 square miles of land plus 1.8 of water. It borders 7 ZIP codes: 55360, 55328, 55363, 55387, 55375, 55359, 55364.
The map draws ZIP code areas only. For the streets inside 55388, 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 55388 compare with the rest of Carver County?
| Measure | 55388 | In Carver County | In MN |
|---|---|---|---|
| People (ACS 2020-2024) | 5,893 | 9th of 17 | 225th of 881 |
| Median household income | $99k | 12th of 14 | 134th of 545 |
| Median home value | $357k | 10th of 16 | 129th of 558 |
Its median household income is higher than in 81% of U.S. residential ZIP codes, and it is denser than 60% 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 55388?
The 2020 Census counted 5,984 people in 55388; the ACS, which samples households over 2020-2024, estimates 5,893. Between the 2010 and 2020 censuses its population grew 6.5% (its boundary stayed at least 90% the same).
- People, ACS 2020-2024
- 5,893
- 2020 Census count
- 5,984+6.5% since 2010 (5,619)
- Households
- 2,184
- Median age
- 34.7
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 55388?
Of the 5,893 people the ACS estimates in 55388, 23.9% are under 18 and 13.7% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (92.6%).
- Under 1823.9%
- 18 to 6462.4%
- 65 and older13.7%
- White, not Hispanic92.6%
- Other or two or more3.7%
- Hispanic or Latino2.9%
- Asian, not Hispanic0.7%
- Black, not Hispanic0.2%
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 55388 earn?
Median household income is $99,375 (ACS 2020-2024), the 12th highest of the 14 ranked ZIP codes in Carver County. It is not measurably different from 2015-2019 ($104,630 in 2024 dollars): the change is within the surveys' margins of error.
- Median household income
- $99,375
- Income per person
- $43,394
- Below the poverty line
- 7.3%
- Unemployed (of the labor force)
- 0.7%
- Adults 25+ with a bachelor's degree
- 23.6%
- Adjusted gross income per tax return, 2022
- $86,0422,980 returns; wages 77% 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 55388?
FHFA's house price index for 55388, built from repeat sales and appraisals of the same homes, rose 66% from 2015 to 2025 and rose 36% from 2020 to 2025, and moved +5.2% in 2025.
- Median home value (owners' estimate)
- $356,900
- Median gross rent
- $953
- Homes owned by their occupants
- 84.5%
- Housing units
- 2,281
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 55388?
154 business establishments had a location in this ZIP code in 2023, 4 more than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction51
- Other services (except public administration)17
- Administrative and support and waste management and remediation services12
- Manufacturing10
- Health care and social assistance10
- Accommodation and food services10
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 55388?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 55360 | Mayer | 3,341 | $122k | 4.4 mi |
| 55328 | Delano | 10,019 | $114k | 5.7 mi |
| 55363 | Montrose | 5,814 | $102k | 6.7 mi |
| 55387 | Waconia | 15,030 | $115k | 7.2 mi |
| 55375 | Saint Bonifacius | 4,326 | $131k | 7.3 mi |
| 55359 | Maple Plain | 6,997 | $129k | 8.4 mi |
| 55364 | Mound | 14,097 | $109k | 8.5 mi |
| 55367 | New Germany | 1,122 | $94k | 7.5 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.