Looking for a cast iron pipe plumber in Oslo, MN? Describe your project once and up to three licensed plumbers who work in Oslo and Marshall County get back to you with a quote. It's free and there is no obligation.
Oslo is home to about 239 people (2024 Census Bureau estimate), a stable community (−0.8% since 2020). With 645 people per sq mi, it is a semi-rural area. Homes built before the mid-1970s often still have cast iron drains reaching the end of their life.
Oslo at a glance
- Population (Census Bureau estimate, 2024)
- 239 (−0.8% since 2020)
- Rank in Minnesota
- 624th of 855 cities and towns
- Land area
- 0.4 sq mi
- Population density
- 645 people per sq mi (semi-rural)
- Type
- City (Oslo city)
- Main county
- Marshall County
What to check before hiring in Oslo
- Camera first: a video inspection shows where and how badly the pipe is damaged.
- License and permit: in Minnesota, drain work is done by a licensed plumber under a permit.
- Method: ask for both lining and replacement options when possible.
- Price drivers: length, slab access, tunneling, method and restoration.
Useful official resources
-
IAPMO: plumbing codes
Official information and guidance.
-
NASSCO: pipeline rehabilitation
Official information and guidance.
Services available in Oslo
-
Cast iron drain replacement
Replacement of cast iron drain lines with PVC, including under-slab work where needed.
-
Cast iron pipe lining
Rehabilitation of cast iron drains with an epoxy or cured-in-place liner.
Frequently asked questions in Oslo
How much does cast iron replacement cost in Oslo, MN?
It depends on the length, the slab and the method. Describe your home: plumbers who serve Oslo reply with a quote.
How long does it take?
From a few days for lining to a week or more with tunneling.
Can I stay at home?
Often yes, with limited plumbing use during the work.
Which licensed plumbers will contact me?
Up to three independent licensed plumbers who serve Oslo and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.