Residential delivery area · Minnesota
ZIP Code 55803: Duluth, MN
ZIP code 55803 uses the postal name Duluth, Minnesota and lies entirely in St. Louis County (Census 2020 ZIP-county file). About 18,000 people live there (Census Bureau, ACS 2020-2024), the 2nd most populous of Duluth's 11 residential ZIP codes. Median household income is $105,888 (Census Bureau, ACS 2020-2024). By Census place, 11% of its land lies in Rice Lake, and 3% in smaller places; 86% is outside any Census place.
- ACS2020-24
- Census2020
- FHFA2025
- ZBP2023
- IRS2022
Where is ZIP code 55803?
55803 centers on 47.035°, -92.072° and covers 295.5 square miles of land plus 31.1 of water. It borders 8 ZIP codes: 55804, 55717, 55811, 55812, 55724, 55779, 55602, 55616.
The map draws ZIP code areas only. For the streets inside 55803, 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 55803 compare with the rest of Duluth?
| Measure | 55803 | In Duluth | In St. Louis County | In MN |
|---|---|---|---|---|
| People (ACS 2020-2024) | 17,662 | 2nd of 11 | 2nd of 51 | 114th of 881 |
| Median household income | $106k | 2nd of 9 | 2nd of 31 | 99th of 545 |
| Median home value | $336k | 2nd of 10 | 2nd of 32 | 169th of 558 |
Its median household income is higher than in 85% of U.S. residential ZIP codes, and it is denser than 45% 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 55803?
The 2020 Census counted 17,796 people in 55803; the ACS, which samples households over 2020-2024, estimates 17,662. Its boundary changed between the 2010 and 2020 censuses, so the two counts are not compared.
- People, ACS 2020-2024
- 17,662
- 2020 Census count
- 17,796
- Households
- 7,528
- Median age
- 45.0
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 55803?
Of the 17,662 people the ACS estimates in 55803, 19.4% are under 18 and 23.4% are 65 or older. The largest group by race and Hispanic origin is White (not Hispanic) (94.0%).
- Under 1819.4%
- 18 to 6457.2%
- 65 and older23.4%
- White, not Hispanic94.0%
- Other or two or more3.8%
- Asian, not Hispanic0.8%
- Black, not Hispanic0.8%
- Hispanic or Latino0.5%
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 55803 earn?
Median household income is $105,888 (ACS 2020-2024), the 2nd highest of the 31 ranked ZIP codes in St. Louis County.
- Median household income
- $105,888
- Income per person
- $52,502
- Below the poverty line
- 6.9%
- Unemployed (of the labor force)
- 3.8%
- Adults 25+ with a bachelor's degree
- 51.8%
- Adjusted gross income per tax return, 2022
- $96,5509,040 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 55803?
FHFA's house price index for 55803, built from repeat sales and appraisals of the same homes, rose 83% from 2015 to 2025 and rose 53% from 2020 to 2025, and moved +8.0% in 2025.
- Median home value (owners' estimate)
- $336,000
- Median gross rent
- $1,586
- Homes owned by their occupants
- 83.5%
- Housing units
- 8,558
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 55803?
298 business establishments had a location in this ZIP code in 2023, 7 fewer than in 2018; the most are in construction (ZIP Code Business Patterns).
- Construction76
- Health care and social assistance36
- Retail trade29
- Other services (except public administration)27
- Professional, scientific, and technical services26
- Accommodation and food services21
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 55803?
| ZIP | Town | People | Household income | Distance |
|---|---|---|---|---|
| 55804 | Duluth | 15,922 | $111k | 9.6 mi |
| 55717 | Canyon | 287 | $97k | 15.0 mi |
| 55811 | Duluth | 28,118 | $80k | 15.3 mi |
| 55812 | Duluth | 10,859 | $66k | 15.6 mi |
| 55724 | Cotton | 707 | $75k | 16.7 mi |
| 55779 | Saginaw | 3,905 | $94k | 19.8 mi |
| 55602 | Brimson | 346 | $74k | 20.5 mi |
| 55616 | Two Harbors | 7,250 | $76k | 23.3 mi |
| 55609 | Knife River | 131 | $78k | 14.2 mi (near) |
| 55814 | Duluth | 319 | – | 15.0 mi (near) |
| 55805 | Duluth | 10,602 | $43k | 16.3 mi (near) |
Source: PlainZIP from the Census 2020 ZCTA boundaries (shared edges) and internal points; figures ACS 2020-2024.