Learn About
The Commemorative
Quarter for
Idaho

Summary for Lost River

About Lost River (Click for our profile page)

Located in: Butte County (see below)

Typical Abbreviation: Lost Riv.

Time Zone: Lost River lies in the Mountain Time Zone (MST/MDT)

Telephone Area Codes: 208 & 986<1>

Elevation: 5,420 feet [1,652.02 m] above sea level<2>

GPS Coordinates (Latitude/Longitude)<3>

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

Lat: 43.689100° (or 43°41'20" N)

Lon: -113.371400° (or -113°22'17" W)

USGS Topo Map: Arco North<4>

Federal GNIS/FIPS Codes for Lost River

GNIS ID: 396821

FIPS State / Place Code: 16 / 47860

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

About Butte County

The city of Arco is the County Seat for Butte County.

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

Population

Year	Population
2019 Est:<5>	2,597 (10.91% decrease since 2010)
2010	2,915 (0.55% increase since 2000)
2000:	2,899

Total Area:<6> 2,233 sq. miles [5,785.2 km²]

Housing Units: <7> 1,354

Official Website: https://buttecountyid.us/

Federal GNIS/FIPS Codes for Butte

GNIS ID: 401703

FIPS State / County Code: 16 / 023

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

About Idaho

From the US Census

Population

Year	Population
2019 Est:	1,789,060 (14.13% increase since 2010)
2010:	1,567,582 (21.15% increase since 2000)
2000:	1,293,953

Websites for State of Idaho

Official Website: https://idaho.gov/

Tourism: https://visitidaho.org/

Parks: https://parksandrecreation.idaho.gov

Fishing: https://idfg.idaho.gov/fish

Hunting: https://idfg.idaho.gov/hunt

Federal GNIS/FIPS Codes for State of Idaho

GNIS ID: 1779783

FIPS State: 16

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

Footnotes ...

<1>	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 208 code has been Overlayed with the 986 area code. New phone numbers in the Lost River area will be assigned with one of these codes: 208 or 986. As a result, placing a call in the Lost River area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	The elevation is an estimate for the area around Lost River - it will be higher in some places and lower in others.
<3>	Longitude & latitude values may not be the geographic center of Lost River, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<4>	Name of the USGS 7.5 Minute topographic map which includes Lost River.
<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 Lost River. 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).