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Summary for Keystone

So far, we found very little information about Keystone. The little that we've found leads us believe that the community is historic.<1>

We've added Keystone to our Gazetteer with the hope that we can develop more information. We would especially like to find the location of Keystone - knowing its coordinates, we can explore things like its relationship to neighboring communities, nearby cemeteries, etc. If you can help us with Keystone, please Contact Us.

About Keystone (Click for our profile page)

Our information shows that the community of Keystone is historic.

Time Zone: The area where Keystone was located is in the Central Time Zone (CST/CDT)

Telephone Area Codes: 918 & 539<2>

Federal GNIS/FIPS Codes for Keystone

GNIS ID: 1793908

FIPS State / Place Code: None

(For more about Federal Codes, see our Misc Page for Keystone)

About Tulsa County

The community of Tulsa is the County Seat for Tulsa County.

From the 2010 US Census (For more detail, see our )

Population

Year	Population
2019 Est:<3>	651,552 (7.7% increase since 2010)
2010	604,973 (7.4% increase since 2000)
2000:	563,299

Total Area:<4> 587 sq. miles [1,520.4 km²] - of which 2.86% is water (16.77 sq. miles [43.4 km²])

Housing Units: <5> 268,426

Official Website: https://www.tulsacounty.org/

Federal GNIS/FIPS Codes for Tulsa

GNIS ID: 1101859

FIPS State / County Code: 40 / 143

(For more about Federal Codes, see our Misc Page for Keystone)

About Oklahoma

From the US Census

Population

Year	Population
2019 Est:	3,960,676 (5.58% increase since 2010)
2010:	3,751,351 (8.71% increase since 2000)
2000:	3,450,654

Websites for State of Oklahoma

Official Website: https://www.ok.gov/

Tourism: https://www.travelok.com/

Parks: https://www.travelok.com/state-parks

Fishing: https://www.travelok.com/fishing-trail

Hunting: https://www.travelok.com/hunting

Federal GNIS/FIPS Codes for State of Oklahoma

GNIS ID: 1102857

FIPS State: 40

(For more about Federal Codes, see our Misc Page for Keystone)

Footnotes ...

<1>	We use the term 'Historic' broadly and it generally means that the community no longer exists. However, it can also mean that the community might still exist, but was significantly larger or had a more 'official' existence in the past than it does now. Unfortunately our sources of data have proven to be unreliable. If you can provide us with more specific information about Keystone, please let us know so that we can improve our accuracy.
<2>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 918 code has been Overlayed with the 539 area code. New phone numbers in the Keystone area will be assigned with one of these codes: 918 or 539. As a result, placing a call in the Keystone area will require 10-digit dialing (where you enter both the area code and then the phone number).
<3>	Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2019.
<4>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Keystone. The value given by the Census Bureau reflects their statistical (or sampling) requirements. For example, if there is a cluster of people living just outside of the community's official boundary, the Census-defined area might be expanded to include that group.
<5>	A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).