County · code 20051
Ellis CountyKansas
Ellis County is a county in Kansas with its seat in Hays, created on February 26, 1867.
- Founded1867
- County seatHays
- Land area900 sq mi + 0.5 sq mi water
- Population28,934 2020 Census
Where it is
Ellis on the map of Kansas
Kansas has 105 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1867 from Riley County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Ellis County was created from Riley County on February 26, 1867, though it was not fully organized until October 28, 1867. Between 1868 and 1881, several neighboring counties were attached to Ellis for judicial purposes as they were organized, including Graham, Ness, Rooks, Rush, Trego, Gove, and Wallace, gradually detaching as each became fully organized.
- 1867Ellis County created Ellis created from Non-County Area 2 attached to Riley; Ellis not fully organized. · Kans. Laws 1867, 7th leg., ch. 33, sec. 28/p. 55
- 1867Changed Ellis fully organized. · Winter, 78
- 1868
- 1868
- 1872
Show all 12 changes
- 1867Ellis County created Ellis created from Non-County Area 2 attached to Riley; Ellis not fully organized. · Kans. Laws 1867, 7th leg., ch. 33, sec. 28/p. 55
- 1867Changed Ellis fully organized. · Winter, 78
- 1868
- 1868
- 1872
- 1872
- 1872
- 1873
- 1873
- 1874Changed Rush fully organized, detached from Ellis. · Andreas, 1585; Kans. Laws 1875, 15th leg., ch. 84, sec. 2/p. 121
- 1879Changed Trego fully organized, detached from Ellis. · Andreas, 1297; Kansas Counties, KSHS, http://www.kshs.org/genealogists/places/counties.htm, 20 October 2004
- 1881
Land and parcels
What the maps cover in Ellis
Who publishes each layer, how good it is, and when we last checked.
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Parcels Missing
No public parcel map found for Ellis County yet. Lot lines and owners of record are kept by the county (ellisco.net).
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Address points Official
One point per address, 15,108 in all from Kansas 911 Coordinating Council NG911 program, hosted by DASC (Data Access and Support Center for the Kansas GIS Policy Board).
edited 13 July 2026 · checked 13 October 2026 -
Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- 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
Ellis by the Census
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
Permits
Zoning and code
County government
- County government
The official website of Ellis County.
See your own lot on these maps
Open Ellis 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.
Questions
Common questions about Ellis County
- When was Ellis County founded?
- Ellis County was founded in 1867, formed from Riley County.
- What is the county seat of Ellis County?
- The county seat of Ellis County is Hays.
- Is there an online parcel map for Ellis 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 Ellis County's boundary or name changed?
- Ellis County was created in 1867 from Riley County. Since then the Atlas of Historical County Boundaries records 11 later changes, chiefly involving Trego County, Ness County and Rooks County.
- Who issues building permits in Ellis County?
- The county's page on building permits: Moving Permit. Inside a city or town, ask that city first.
- Who issues septic and well permits in Ellis County?
- The county's page on septic systems and wells: Environmental Services.
- Is my lot in a flood zone?
- We do not have flood maps for Ellis County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby