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2. Geographic information system - Wikipedia

   en.wikipedia.org/wiki/Geographic_Information_System

   A geographic information system (GIS) consists of integrated computer hardware and software that store, manage, analyze, edit, output, and visualize geographic data. [1][2] Much of this often happens within a spatial database; however, this is not essential to meet the definition of a GIS. [1] In a broader sense, one may consider such a system ...

3. Ohio's 4th congressional district - Wikipedia

   en.wikipedia.org/wiki/Ohio's_4th_congressional...

   Coordinates: 40°30′N 83°58′W. Ohio's 4th congressional district. Interactive map of district boundaries since January 3, 2023. Representative. Jim Jordan. R – Urbana. Distribution. 63.02% urban [1] 36.98% rural.

4. Ohio's congressional districts - Wikipedia

   en.wikipedia.org/wiki/Ohio's_congressional_districts

   Ohio is divided into 15 congressional districts, each represented by a member of the United States House of Representatives. After the 2010 census, Ohio, which up until then had 18 districts, lost two House seats due to slow population growth compared to the national average, [1] and a new map was signed into law on September 26, 2011. Starting ...

5. Topographic map - Wikipedia

   en.wikipedia.org/wiki/Topographic_map

   In modern mapping, a topographic map or topographic sheet is a type of map characterized by large- scale detail and quantitative representation of relief features, usually using contour lines (connecting points of equal elevation), but historically using a variety of methods. Traditional definitions require a topographic map to show both ...

6. Paulding County, Ohio - Wikipedia

   en.wikipedia.org/wiki/Paulding_County,_Ohio

   Website. www.pauldingcountyoh.com. Paulding County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was about 18,806. [1] Its county seat is Paulding. [2] The county was created in 1820 and later organized in 1839. [3]

7. List of counties in Ohio - Wikipedia

   en.wikipedia.org/wiki/List_of_counties_in_Ohio

   The average population of Ohio's counties was 133,931; Franklin County was the most populous (1,326,063) and Vinton County was the least (12,474). The average land area is 464 sq mi (1,200 km 2). The largest county by area is Ashtabula County at 702.44 sq mi (1,819.3 km 2), and its neighbor, Lake County, is the smallest at 228.21 sq mi (591.1 ...

8. Contour line - Wikipedia

   en.wikipedia.org/wiki/Contour_line

   A contour line (also isoline, isopleth, isoquant or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. [1][2] It is a plane section of the three-dimensional graph of the function parallel to the -plane. More generally, a contour line for a function of ...

9. Ohio statistical areas - Wikipedia

   en.wikipedia.org/wiki/Ohio_statistical_areas

   Ohio statistical areas. Coordinates: 40.2862°N 82.7937°W. The U.S. State of Ohio currently has 55 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated 11 combined statistical areas, 15 metropolitan statistical areas, and 29 micropolitan statistical areas in Ohio. [1]