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Summary for Dayton

About Dayton (Click for our profile page)

Located in: Primarily Montgomery County (see below). A portion of Dayton extends into Greene County.

Pronunciation: DAY-tuhn <1>

Time Zone: Dayton lies in the Eastern Time Zone (EST/EDT)

Telephone Area Codes: 937 & 326<2>

ZIP Codes: 45390, 45401-45406, 45409-45410, 45412-45417, 45419-45420, 45422-45424, 45426, 45428-45435, 45437, 45439-45441, 45448-45449, 45458-45459, 45469-45470, 45475, 45479, 45481-45482, 45490<3>

Elevation: 730 feet [222.5 m] above sea level<4>

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

Population

Year	Population
2019 Est:<5>	140,463 (0.75% decrease since 2010)
2010:	141,527 (14.83% decrease since 2000)
2000:	166,179

Total Area:<6> 56.5 sq. miles [146.3 km²] - of which 1.51% is water (0.85 sq. miles [2.2 km²])

Housing Units:<7> 74,065

Websites for Dayton

Official Website: www.cityofdayton.org/

Chamber of Commerce: www.daytonchamber.org/

Junior League: www.jldayton.org/

GPS Coordinates (Latitude/Longitude)<8>

For the purpose of mapping and calculating distances, we have chosen the following reference point for Dayton:

Lat: 39.759500° (or 39°45'34" N)

Lon: -84.191800° (or -84°11'30" W)

USGS Topo Map: Dayton North<9>

Federal GNIS/FIPS Codes for Dayton

GNIS ID: 1086666

FIPS State / Place Code: 39 / 21000

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

About Montgomery County

The city of Dayton is the County Seat for {Montgomery County}.

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

Population

Year	Population
2019 Est:	531,687 (0.73% decrease since 2010)
2010	535,597 (4.2% decrease since 2000)
2000:	559,062

Total Area: 464.3 sq. miles [1,202.6 km²]

Housing Units: 254,775

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

Federal GNIS/FIPS Codes for Montgomery

GNIS ID: 1074069

FIPS State / County Code: 39 / 113

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

About Ohio

From the US Census

Population

Year	Population
2019 Est:	11,696,507 (1.39% increase since 2010)
2010:	11,536,504 (1.62% increase since 2000)
2000:	11,353,140

Websites for State of Ohio

Official Website: https://ohio.gov/

Tourism: https://ohio.gov/tourism/

Parks: https://ohiodnr.gov/discover-and-learn/safety-conservation/about-odnr/division-parks-watercraft

Fishing: https://ohiodnr.gov/go-and-do/outdoor/fishing

Hunting: https://ohiodnr.gov/go-and-do/outdoor/hunting

Federal GNIS/FIPS Codes for State of Ohio

GNIS ID: 1085497

FIPS State: 39

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

Footnotes ...

<1>	The pronunciation we've provided is our attempt to give a phonetic pronunciation for Dayton. While it might not be exactly right, hopefully it will be close. If we have it wrong or there's a better way to pronounce the name, please contact us through our Feedback Page.
<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 937 code has been Overlayed with the 326 area code. New phone numbers in the Dayton area will be assigned with one of these codes: 937 or 326. As a result, placing a call in the Dayton area will require 10-digit dialing (where you enter both the area code and then the phone number).
<3>	ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a city (such as Dayton). When looking for a ZIP Code, whether Dayton or elsewhere, it's always best to check the website of the United States Postal Service (USPS). Our list of ZIP Codes for Dayton includes: 45390, 45401, 45402, 45403, 45404, 45405, 45409, 45412, 45413, 45414, 45415, 45416, 45419, 45422, 45423, 45426, 45428, 45429, 45430, 45431, 45432, 45433, 45434, 45437, 45439, 45440, 45448, 45458, 45469, 45475, 45479, 45481 & 45482.
<4>	The elevation is an estimate for the area around Dayton - it will be higher in some places and lower in others.
<5>	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.
<6>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Dayton. 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.
<7>	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).
<8>	Longitude & latitude values may not be the geographic center of Dayton, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<9>	Name of the USGS 7.5 Minute topographic map which includes Dayton.