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Welcome to Hamilton County ...

Time Zone: Hamilton County lies in the Eastern Time Zone (EST/EDT) and observes daylight saving time.

The community of Noblesville is the Seat for Hamilton County.

Hamilton County was founded January 8, 1823.

From the Census Estimates for 2019, <1> Hamilton had a population of 338,011 people. This is an increase of 22.25% since the last Census (which gave a population of 276,493 people in 2010).

At the time of the 2010 Census, Hamilton represented 4.26% of the total population of Indiana.

Below are some of the communities located in Hamilton County:

  • Arcadia
    (10 miles [16.1 km] to the north)
    • Arcadia is located in Hamilton County (IN)
    • Jump to our Gazetteer entry for Arcadia
    • Population from the 2020 Census: 1,648 people
    • Jump to TripAdvisor's Tourism page for Arcadia <2>
  • Atlanta
    (12 miles [19.3 km] to the north)
    • Atlanta is located in Hamilton County (IN)
    • Jump to our Gazetteer entry for Atlanta
    • Population from the 2020 Census: 783 people
    • Jump to TripAdvisor's Tourism page for Atlanta <2>
  • Carmel
    (5 miles [8 km] to the southwest)
    • Carmel is located in Hamilton County (IN)
    • Jump to our Gazetteer entry for Carmel
    • Population from the 2020 Census: 101,643 people
    • Jump to TripAdvisor's Tourism page for Carmel <2>
  • Cicero
    (6 miles [9.7 km] to the north)
    • Cicero is located in Hamilton County (IN)
    • Jump to our Gazetteer entry for Cicero
    • Population from the 2020 Census: 4,999 people
    • Jump to TripAdvisor's Tourism page for Cicero <2>
  • Fishers
    (6 miles [9.7 km] to the southeast)
    • Fishers is located in Hamilton County (IN)
    • Jump to our Gazetteer entry for Fishers
    • Population from the 2020 Census: 97,020 people
    • Jump to TripAdvisor's Tourism page for Fishers <2>
  • Noblesville
    (3 miles [4.8 km] to the east)
  • Sheridan
    (10 miles [16.1 km] to the northwest)
    • Sheridan is located in Hamilton County (IN)
    • Jump to our Gazetteer entry for Sheridan
    • Population from the 2020 Census: 3,048 people
    • Jump to TripAdvisor's Tourism page for Sheridan <2>
  • Westfield
    (3 miles [4.8 km] to the west)
    • Westfield is located in Hamilton County (IN)
    • Jump to our Gazetteer entry for Westfield
    • Population from the 2020 Census: 46,145 people
    • Jump to TripAdvisor's Tourism page for Westfield <2>

Websites of Interest ...

Footnotes ...

<1>On a yearly basis, the US Census Bureau creates an estimate of the county's population. Keep in mind that this is an estimate and not an actual count. The last physical count was the 2010 Census and the next count will be for the 2020 Census.
<2>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.