Summary for Troy Grove
About Troy Grove (Click for our profile page)
Located in: La Salle County (see below)
Typical Abbreviation: Troy Grv.
Time Zone: Troy Grove lies in the Central Time Zone (CST/CDT)
Telephone Area Codes: 815 & 779<1>
ZIP Code: 61372<2>
Elevation: 660 feet [201.17 m] above sea level<3>
From the 2010 US Census (For more detail, see our Census Page for Troy Grove)
Population
| Year | Population |
| 2019 Est:<4> | 238 (4.8% decrease since 2010) |
| 2010: | 250 (18.03% decrease since 2000) |
| 2000: | 305 |
Total Area:<5> 0.69 sq. miles [1.8 km²]
Housing Units:<6> 112
GPS Coordinates (Latitude/Longitude)<7>
For the purpose of mapping and calculating distances, we have chosen the following reference point for Troy Grove:
Lat: 41.465700° (or 41°27'56" N)
Lon: -89.081600° (or -89°4'53" W)
USGS Topo Map: Troy Grove<8>
Federal GNIS/FIPS Codes for Troy Grove
GNIS ID: 2400005
FIPS State / Place Code: 17 / 76225
(For more about Federal Codes, see our Misc Page for Troy Grove)
About La Salle County
The village of Ottawa is the County Seat for La Salle County.
From the 2010 US Census (For more detail, see our Census Page for La Salle)
Population
| Year | Population |
| 2019 Est: | 108,669 (4.53% decrease since 2010) |
| 2010 | 113,823 (2.08% increase since 2000) |
| 2000: | 111,509 |
Total Area: 1,148 sq. miles [2,973.7 km²] - of which 1.13% is water (13.01 sq. miles [33.7 km²])
Housing Units: 49,978
Official Website: www.lasallecounty.org/
Federal GNIS/FIPS Codes for La Salle
GNIS ID: 422247
FIPS State / County Code: 17 / 099
(For more about Federal Codes, see our Misc Page for Troy Grove)
About Illinois
From the US Census
Population
| Year | Population |
| 2019 Est: | 12,667,017 (1.28% decrease since 2010) |
| 2010: | 12,830,632 (3.31% increase since 2000) |
| 2000: | 12,419,293 |
Websites for State of Illinois
Official Website: https://illinois.gov
Tourism: https://www.enjoyillinois.com/
Parks: https://www.dnr.illinois.gov/
Fishing: https://www.ifishillinois.org/
Hunting: https://dnr.illinois.gov/hunting.html
Federal GNIS/FIPS Codes for State of Illinois
GNIS ID: 1779784
FIPS State: 17
(For more about Federal Codes, see our Misc Page for Troy Grove)
Off-the-Road Links ...
Unfortunately, we don't know of a website for Troy Grove. If you can help, please contact us through our Feedback Page.
The official website for La Salle County: www.lasallecounty.org/
The official website for State of Illinois: https://illinois.gov
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 815 code has been Overlayed with the 779 area code. New phone numbers in the Troy Grove area will be assigned with one of these codes: 815 or 779. As a result, placing a call in the Troy Grove area will require 10-digit dialing (where you enter both the area code and then the phone number). |
| <2> | 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 village (such as Troy Grove). When looking for a ZIP Code, whether Troy Grove or elsewhere, it's always best to check the website of the United States Postal Service (USPS). |
| <3> | The elevation is an estimate for the area around Troy Grove - it will be higher in some places and lower in others. |
| <4> | 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. |
| <5> | The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Troy Grove. 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. |
| <6> | 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). |
| <7> | Longitude & latitude values may not be the geographic center of Troy Grove, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source. |
| <8> | Name of the USGS 7.5 Minute topographic map which includes Troy Grove. |