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  2. State Plane Coordinate System - Wikipedia

    en.wikipedia.org/wiki/State_Plane_Coordinate_System

    The State Plane Coordinate System (SPCS) is a set of 125 geographic zones or coordinate systems designed for specific regions of the United States. Each U.S. state contains one or more state plane zones, the boundaries of which usually follow county lines. There are 108 zones in the contiguous United States, with 10 more in Alaska, five in ...

  3. List of principal and guide meridians and base lines of the ...

    en.wikipedia.org/wiki/List_of_principal_and...

    Primarily from the United States Government Printing Office Style Manual. [1] State names usually signify only parts of each listed state, unless otherwise indicated. Based on the BLM manual's 1973 publication date, and the reference to Clarke's Spheroid of 1866 in section 2-82, coordinates appear to be in the NAD27 datum.

  4. 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 ...

  5. Public Land Survey System - Wikipedia

    en.wikipedia.org/wiki/Public_Land_Survey_System

    The Public Land Survey System (PLSS) is the surveying method developed and used in the United States to plat, or divide, real property for sale and settling. Also known as the Rectangular Survey System, it was created by the Land Ordinance of 1785 to survey land ceded to the United States by the Treaty of Paris in 1783, following the end of the ...

  6. United States National Grid - Wikipedia

    en.wikipedia.org/wiki/United_States_National_Grid

    The United States National Grid (USNG) is a multi-purpose location system of grid references used in the United States. It provides a nationally consistent "language of location", optimized for local applications, in a compact, user friendly format. It is similar in design to the national grid reference systems used in other countries.

  7. Geographic coordinate system - Wikipedia

    en.wikipedia.org/wiki/Geographic_coordinate_system

    t. e. A geographic coordinate system (GCS) is a spherical or geodetic coordinate system for measuring and communicating positions directly on Earth as latitude and longitude. [1] It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others.

  8. Franklin County, Ohio - Wikipedia

    en.wikipedia.org/wiki/Franklin_County,_Ohio

    Franklin County is a county in the U.S. state of Ohio. As of the 2020 census, the population was 1,323,807, [3] making it the most populous county in Ohio. Most of its land area is taken up by its county seat, Columbus, [4] the state capital and most populous city in Ohio. The county was established on April 30, 1803, less than two months after ...

  9. Portage County, Ohio - Wikipedia

    en.wikipedia.org/wiki/Portage_County,_Ohio

    Portage County is a county in the U.S. state of Ohio. As of the 2020 census, the population was 161,791. [1] Located in Northeast Ohio, Portage County is part of the Akron Metropolitan Statistical Area, which is also included in the Cleveland–Akron–Canton Combined Statistical Area. Its county seat is Ravenna and its largest city is Kent. [2]

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