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Welcome to Adams County ...

Time Zone: Adams County lies in the Central Time Zone (CST/CDT) and observes daylight saving time.

The community of Quincy is the Seat for Adams County.

Adams County was founded in 1825 and was created by taking area from Pike County.

From the Census Estimates for 2019, <1> Adams had a population of 65,435 people. This is a decrease of 2.57% since the last Census (which gave a population of 67,160 people in 2010).

At the time of the 2010 Census, Adams represented 0.52% of the total population of Illinois.

Below are some of the communities located in Adams County:

  • Camp Point
    (11 miles [17.7 km] to the northeast)
  • Clayton
    (16 miles [25.7 km] to the east)
  • Coatsburg
    (7 miles [11.3 km] to the northeast)
  • Columbus
    (6 miles [9.7 km] to the east)
    • Columbus is located in Adams County (IL)
    • Jump to our Gazetteer entry for Columbus
    • Population from the 2020 Census: 96 people
  • Golden
    (16 miles [25.7 km] to the northeast)
    • Golden is located in Adams County (IL)
    • Jump to our Gazetteer entry for Golden
    • Population from the 2020 Census: 611 people
    • Jump to TripAdvisor's Tourism page for Golden <2>
  • La Prairie
    (18 miles [29 km] to the northeast)
  • Liberty
    (10 miles [16.1 km] to the southeast)
  • Lima
    (15 miles [24.1 km] to the north)
    • Lima is located in Adams County (IL)
    • Jump to our Gazetteer entry for Lima
    • Population from the 2020 Census: 146 people
    • Jump to TripAdvisor's Tourism page for Lima <2>
  • Continue List   (6 more) ...
    • Loraine
      (13 miles [20.9 km] to the north)
    • Mendon
      (8 miles [12.9 km] to the north)
      • Mendon is located in Adams County (IL)
      • Jump to our Gazetteer entry for Mendon
      • Population from the 2020 Census: 948 people
      • Jump to TripAdvisor's Tourism page for Mendon <2>
    • Payson
      (10 miles [16.1 km] to the south)
      • Payson is located in Adams County (IL)
      • Jump to our Gazetteer entry for Payson
      • Population from the 2020 Census: 980 people
      • Jump to TripAdvisor's Tourism page for Payson <2>
    • Plainville
      (13 miles [20.9 km] to the south)
    • Quincy
      (7 miles [11.3 km] to the west)
      • Quincy is located in Adams County (IL)
      • Jump to our Gazetteer entry for Quincy
      • Population from the 2020 Census: 39,589 people
      • Jump to TripAdvisor's Tourism page for Quincy <2>
    • Ursa
      (9 miles [14.5 km] to the northwest)
      • Ursa is located in Adams County (IL)
      • Jump to our Gazetteer entry for Ursa
      • Population from the 2020 Census: 596 people
      • Jump to TripAdvisor's Tourism page for Ursa <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. For more information, please visit the U.S. Census Bureau.
<2>While we're fans and frequent users of TripAdvisor, you should know that we're also members of the TripAdvisor affiliate program.