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County · code 29161

Phelps CountyMissouri

Phelps County is in Missouri, with its seat in Rolla. It was created on November 13, 1857.

  • Founded1857
  • County seatRolla
  • Named forJohn S. Phelps
  • Land area672 sq mi + 2.5 sq mi water
  • Population44,638 2020 Census
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Updated

MariesDentPulaskiCrawfordTexasGasconade Rolla Census outline · seat marked

Where it is

Phelps on the map of Missouri

Missouri has 115 counties and county equivalents, each with its own records office. Shapes with a page are links.

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Counties of Missouri · Phelps highlighted

History

Formed in 1857 from Crawford County and Maries County

An old deed may name a county that no longer exists, or a boundary that has since moved.

Phelps County was formed from Crawford and Maries counties and named after John S. Phelps. It exchanged territory with Maries County in 1859 and gained land from Pulaski County in 1859. Phelps gained more territory from Maries County in 1868.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

  1. 1857
    Phelps County created Phelps created from Crawford and Maries.
    from Crawfordfrom Maries
    · Mo. Laws 1857, adj. sess., loc., pp. 397-398
  2. 1859
    Exchanged territory Phelps exchanged with Maries.
    with Maries
    · Mo. Laws 1858-1859, pp. 371-372
  3. 1859
    Gained territory Phelps gained from Pulaski.
    from Pulaski
    · Mo. Laws 1858-1859, p. 393
  4. 1868
    Gained territory Phelps gained from Maries.
    from Maries
    · Mo. Laws 1868, adj. sess., gen., pp. 23-24

Land and parcels

What the maps cover in Phelps

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Phelps by the Census

Population
44,638 2020 Census count
Housing units
20,174 2020 Census count
Land area
672 square miles
Water area
2.5 square miles
People per sq mi
66 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Records

Zoning and code

County government

See your own lot on these maps

Open Phelps County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Phelps County

When was Phelps County founded?
Phelps County was founded in 1857, formed from Crawford County and Maries County, and named after John S. Phelps.
What is the county seat of Phelps County?
The county seat of Phelps County is Rolla.
Is there an online parcel map for Phelps County?
Not that we have found yet. Lot lines and owners of record are kept by the county assessor's office. When a public parcel map appears, it shows here.
Has Phelps County's boundary or name changed?
Phelps County was created in 1857 from Crawford County and Maries County. Since then the Atlas of Historical County Boundaries records 3 later changes, chiefly involving Maries County and Pulaski County.
Is my lot in a flood zone?
We do not have flood maps for Phelps County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door