Get API Key →
US ZIP Code Profile

ZIP Code 55123
Saint Paul, Minnesota

ZIP code 55123 is in Saint Paul, located in Dakota County, Minnesota, within the Minneapolis-St. Paul-Bloomington metro area. Its 2020 Census population was 27,153. The estimated median adjusted gross income per tax return is $79,038, and about 17% of filers report $200,000 or more.

2020 Population
27,153
Census ZCTA
County
Dakota
FIPS 27037
Median income (est.)
$79,038
IRS SOI 2022
Land Area
11.008 mi²
+ 0.944 mi² water

01Location & Geography

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

Primary CitySaint Paul, MN
CountyDakota County (FIPS 27037)
StateMinnesota (FIPS 27)
Metro Area (MSA)Minneapolis-St. Paul-Bloomington, MN-WI Metro Area (33460)
Census Region / DivisionMidwest Region · West North Central Division
Coordinates44.808933, -93.13845
Land / Water Area11.008 mi² land · 0.944 mi² water

02Income & Economics

Distribution of the 13,680 individual tax returns filed in 55123 by adjusted gross income bracket (IRS SOI, 2022).

< $25K
19.7%
$25K–$50K
15.3%
$50K–$75K
13.5%
$75K–$100K
9.5%
$100K–$200K
24.9%
$200K+
17.1%
The $200,000+ bracket accounts for 53% of 55123's total adjusted gross income, from 17% of returns — a concentration that drives the gap between the median ($79,038) 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 55123's IRS income metrics, 2020–2022.

Median income (2021→2022)
$79,038
▲ 1.6%
Filers earning $200K+
17.1%
▲ 0.7 pt
Total filers
13,680
▼ 0.1%
GET /zipc/v2/zipcodes/55123/soi?year=… $73K 2020 $78K 2021 $79K 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 55123 ZCTA.

2000
27,448
 
2010
26,030
▼ -5.2%
2020
27,153
▲ +4.3%

05Nearby ZIP Codes — Live Radius Search

Drag the slider to filter ZIP codes by distance from 55123. Powered by the same radius endpoint developers call from the API.

GET /zipc/v2/radius

ZIP codes within range of 55123

Saint Paul and its immediate neighbors, sorted by distance.

3 mi
GET /zipc/v2/distance

Distance from 55123 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 SortB
USPS Finance Number268360
City AliasesEagan, Saint Paul

07Frequently Asked Questions

What county is ZIP code 55123 in?

ZIP code 55123 is in Dakota County, Minnesota (county FIPS code 27037).

What city is ZIP code 55123?

The primary USPS city for 55123 is Saint Paul, MN.

What metro area (MSA) is 55123 in?

55123 is part of the Minneapolis-St. Paul-Bloomington, MN-WI Metro Area (MSA code 33460).

What is the population of ZIP code 55123?

The 2020 Census population of 55123 was 27,153 residents.

What is the median income in ZIP code 55123?

Based on IRS Statistics of Income data, the estimated median adjusted gross income per tax return in 55123 is about $79,038, with around 17% of filers reporting $200,000 or more. Note that adjusted gross income is a tax measure and differs from U.S. Census household income.