When was Coconino County founded?

Coconino County was founded in 1891, formed from Yavapai County.

What is the county seat of Coconino County?

The county seat of Coconino County is Flagstaff.

Is there an online parcel map for Coconino County?

Yes. Arizona - AZGEO - Open Data publishes a parcel map of 70,014 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Coconino County's boundary or name changed?

Coconino County was created in 1891 from Yavapai County. The Atlas of Historical County Boundaries records no boundary change since.

Is my lot in a flood zone?

We do not have flood maps for Coconino County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 04005

Coconino CountyArizona

Coconino County is a county in Arizona with its seat in Flagstaff. It was created in 1891.

Founded1891
County seatFlagstaff
Land area18,616 sq mi + 45 sq mi water
Population145,101 2020 Census
Parcels mapped70,014 checked 15 October 2026

Open the free map Click any parcel in Coconino County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 19 October 2026

Census outline · seat marked

Where it is

Coconino on the map of Arizona

Arizona has 15 counties and county equivalents, each with its own records office. Shapes with a page are links.

Counties of Arizona · Coconino highlighted

History

Formed in 1891 from Yavapai County

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

Coconino County was created on February 19, 1891, by the Arizona Territory from Yavapai County.

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

1891
Coconino County created Coconino created by Arizona Territory from Yavapai.
from Yavapai
19 February 1891 · Ariz. Terr. Laws 1891, 16th assy./ pp. 26-34

Land and parcels

What the maps cover in Coconino

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

Parcels Good enough

Lot lines and tax-map numbers for 70,014 parcels from Arizona - AZGEO - Open Data. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 15 October 2026
Address points Missing

No public address points layer found for Coconino County yet.
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

Coconino by the Census

Population

145,101 2020 Census count

Housing units

69,108 2020 Census count

Land area

18,616 square miles

Water area

45 square miles

People per sq mi

8 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

Coconino County's official site

We have found the county's site but not its offices yet; start there.

County government

County government
The official website of Coconino County.
coconino.az.gov

See your own lot on these maps

Open Coconino 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.

Open the free map no sign-in Pro early access

Questions

Common questions about Coconino County

When was Coconino County founded?: Coconino County was founded in 1891, formed from Yavapai County.
What is the county seat of Coconino County?: The county seat of Coconino County is Flagstaff.
Is there an online parcel map for Coconino County?: Yes. Arizona - AZGEO - Open Data publishes a parcel map of 70,014 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Coconino County's boundary or name changed?: Coconino County was created in 1891 from Yavapai County. The Atlas of Historical County Boundaries records no boundary change since.
Is my lot in a flood zone?: We do not have flood maps for Coconino County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby