ZIP Code 55010 in Castle Rock, MN

Data Last Updated: January 1, 2026
City:Castle Rock, Minnesota
Names to Avoid:
Oak Grove
County:Dakota County
Timezone:Central (GMT -06:00)
Local Time:9:31:01 PM
Population:No Population Data
Area Codes:651 / 952
Classification:PO Box
Coordinates:44.5445, -93.1535
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https://www.zip-codes.com/zip-code/55010/zip-code-55010.asp

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55010 - Castle Rock, MN

ZIP Code 55010, Castle Rock

Small Town Unique ZIP No Census Data
LocationDakota County, MN
Area0 sq mi Single Point
Delivery Points33 (1 homes, 9 businesses)
PO Boxes23
Also Known AsOak Grove (added Jan 2016)
ZIP CreatedBefore Oct 2004
Enclosed InZIP Code 55057
Key Facts
  • Castle Rock operates as a PO Box-centered ZIP code with 23 boxes serving the local community
  • The ZIP classification is 'P' (PO Box facility), meaning this ZIP code contains only PO Box addresses
  • One rural carrier route provides street delivery service to 280TH ST and surrounding areas
  • Nine businesses maintain addresses in the 55010 ZIP code
  • The post office serves a very compact geographic area in Dakota County
  • No city carrier delivery routes exist; rural carrier service handles all street addresses

Mail Delivery Structure

The post office doesn't offer city carrier delivery. Instead, a single rural route handles the limited street addresses in the area. This arrangement is typical for Minnesota's smaller townships, where population density doesn't justify dedicated city routes. The 23 PO Boxes serve as the primary delivery method, supplemented by rural carrier service for those with roadside mailboxes.

Street Name Patterns

Numbered Township Roads

The single street designation, 280TH ST, follows Minnesota's township grid numbering system common in rural Dakota County. The numbering reflects distance measurements from county baselines, with 280th streets typically located about 28 miles from the reference point.

Nearby Areas

Rocky Hill King Castle Estates Bakkington Stone Pine Ridge Arboretum Heights Glenview Estates

Business & Employment Statistics


ZIP Code 55010 supports both business and residential activity. According to the Business Census (2024), there are 5 business establishments, employing about 66 people with an annual payroll of $4,807,000.

# Residential Mailboxes:0Source: USPS
# Business Mailboxes:0Source: USPS
Total Delivery Receptacles:374Source: USPS
Single Family Delivery Units:0Source: USPS
Multi Family Delivery Units:0Source: USPS
# of Businesses:5Source: CBP
1st Quarter Payroll:$957,000Source: CBP
Annual Payroll:$4,807,000Source: CBP
# of Employees:66Source: CBP

Geography, Land Area, & Statistical Classifications


ZIP Code 55010 is located in Dakota County, Minnesota, within the Minneapolis-St. Paul-Bloomington, MN-WI Metropolitan Statistical Area (CBSA 33460) and Minnesota's 2nd Congressional District. This Metro area has a population of 3,693,351 people, about 0.00% of whom live in ZIP Code 55010. It covers 0 sq mi of land and a water area of 0 sq mi.

CBSA Name:Minneapolis-St. Paul-Bloomington, MN-WISource: Census
CBSA Number:33460Source: Census
CBSA Type:MetroSource: Census
CBSA Division:--Source: Census
CBSA Population:3,693,351Source: Census
MSA:Minneapolis-St. Paul, MN-WI MSASource: Census
Land Area:--Source: Census
Water Area:--Source: Census
Congressional District:02Source: USPS
Congressional Land Area:2437.91 sq miSource: Census
PMSA:--Source: Census
Intro Date:< 2004-10Source: ZIP-Codes.com
Place FIPS Code:--Source: Census
Place Name:--Source: Census

Adjacent & Nearby ZIP Codes


55011 | | 55009

Schools in ZIP Code 55010


We could not locate which school district 55010 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.

Prairie Creek Community School 27695 Denmark Ave
Northfield, MN 55057
District: UnknownNearby
Farmington Elementary 500 Maple St
Farmington, MN 55024
District: Farmington Public School DistrictNearby
Robert Boeckman Middle School 800 Denmark Ave
Farmington, MN 55024
District: Farmington Public School DistrictNearby
Randolph Elementary 29110 Davisson Ave
Randolph, MN 55065
District: Randolph Public School DistrictNearby
Randolph Secondary 29110 Davisson Ave
Randolph, MN 55065
District: Randolph Public School DistrictNearby
Northfield Montessori 340 Montessori Ct
Northfield, MN 55057
District: Private SchoolNearby
St Dominic Elementary School 216 Spring St N
Northfield, MN 55057
District: Private SchoolNearby
Glory Academy 25170 Dodd Blvd
Lakeville, MN 55044
District: Private SchoolNearby

Colleges & Post Secondary Schools near ZIP Code 55010


Carleton College One North College Street
Northfield, MN 55057
Type: Post Secondary
St Olaf College 1520 St Olaf Ave
Northfield, MN 55057-1098
Type: Post Secondary
Dakota County Technical College 1300 145th Street East
Rosemount, MN 55068-2999
Type: Post Secondary
South Central College-Faribault 1225 Sw 3rd St
Faribault, MN 55021-5782
Type: Post Secondary
Rasmussen University-Eagan 3500 Federal Drive
Eagan, MN 55122-1346
Type: Post Secondary
Inver Hills Community College 2500 80th St E
Inver Grove Heights, MN 55076-3224
Type: Post Secondary

Sources & References


Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on January 1, 2026.

  1. U.S. Postal Service [Last Updated: 1/1/2026], https://www.usps.com
  2. ZIP-Codes.com Proprietary Data Enhancements [Updated: 1/1/2026], https://www.zip-codes.com
  3. U.S. Census [Updated: Varies], https://www.census.gov
    • U.S. Census Office of Management and Budget [Updated: As Released]
    • U.S. Census 2020 Demographic & Housing Characteristics (DHC) [Decennial] [Updated: 5/25/2023]
    • U.S. Census 2011-2024 American Community Survey 5-year estimates (ACS) [Annually] [Updated: Annually, As Released]
    • U.S. Census Business Patterns (CBD) [Annually] [Updated: Annually, As Released]
    • U.S. Census American National Standards Institute (ANSI) [Updated: As Released]
  4. U.S. Geological Survey [Updated: Varies], https://www.usgs.gov
  5. Centers for Medicare & Medicaid Services [Updated: Annually, As Released], https://www.cms.gov
  6. National Center for Education Statistics [Updated: 1/1/2026], https://nces.ed.gov