The Geographical Boundaries We Live In

A Parcel ID is the unique nine-digit number designated to a parcel. Local tax assessors use Parcel IDs to identify and record property tax, title, and deed information.

• PIN: 07-12-409-010
• PIN # Breakdown: 07 (Township #) - 12 (Section #) - 409 (Block #) - 010 (Property #)
• Zoning District: R1B - Medium Density Single-Family District
• Area: ~6,000 square feet

A Census Block is the smallest geographic unit that the United States Census Bureau uses to collect sample data. They are usually bounded by visible features such as roads, streams, railroads, and non-visible boundaries such as property lines, municipal limits, school districts, and county limits.

• Census Block #: 1008

A Subdivision is a tract of land that is subdivided from a larger piece of land. The purpose is to split, or also known as subdivide, a large tract of land into smaller ones so they are easier to sell and developed, which can be done independently from one and the other. In the United States, the creation of a subdivision was often the first step towards creating a new incorporated township or city. 

• Platted: 1942
• Details: 140 Single-Family Homes

A Census Block Group is a cluster of census blocks within a census track used by the United States Census Bureau to collect sample data. The population of a block group typically ranges from 600 to 3,000 people.

• Population: 1,495
• Median Age: 47.3
• # of Housing Units: 610
• Median Household Income: $136,667

An Election Precinct, known as a voting district or election district, is a division of a city, county, or geographic area used to designate polling stations and gather votes. Each address is assigned to a precinct to direct citizens where to vote.

Polling Location: St Timothy Lutheran Church, 1313 N Mill St, Naperville, 60563

A Census Tract is a small, relatively permanent statistical subdivision of a county used by the United States Census Bureau to collect sample data. The population of a census tract typically ranges from 1,200 to 8,000 people.

• Population: 6,010
• Median Age: 40.4
• # of Housing Units: 2,796
• Median Household Income: $72,113

A ZIP Code is a postal code used by the United States Postal Service to establish zones for mail distributions. Made up of five digits, ZIP (Zone Improvement Plan) codes can stretch across multiple neighborhoods or consist of a neighborhood. The first digit of the code increases as you move west.

Naperville is divided into 4 zip codes: 60563, 60540, 60564, and 60565

• 1st Digit: States (numbers increase as you head west, and some states share the same 1st digit).
• 2nd & 3rd Digits: Regions within the State (The first three digits combined results in USPS Sectional Center Facility’s code, which are the regional centers for mail sorting and distribution).
• 4th & 5th Digits: Specific areas, such as post offices, within a municipality.
• ZIP + 4 (Extra Four Digits): Represent more specific areas, such as blocks and office buildings. This is no longer needed due to improvements to geo-location and sorting technologies.

A Tax Code Area is a geographic area in which local entities, such as libraries, schools, and fire districts, may assess taxes to fund their operations. It can contain multiple overlapping tax districts of various entities and is used by tax assessors to calculate taxes.

Tax Code Area #: 7025

• DuPage Water Commission
• City of Naperville
• Naperville Park District
• College of DuPage District 502
• DuPage Airport Authority
• City of Naperville Library
• Unit School District 203

A Township is a geographic and political subdivision within a county that acts as a local government unit. The state legislature specifies the responsibilities and form of a township government.

Township #: 7 (Naperville Township)

Naperville Township is within DuPage County, which is divided into 10 Townships.

A Municipality is a city, town, or village that acts as an urban political unit within a state. A municipality has its local government with a corporate status and state-granted powers that it can exercise over its territory.

• Year Incorporated: 1831
• Population: 148,449 (2019)
• Median Household Income: $118,187 (2014-2018)
• Foreign-Born Persons (%): 19.1% (2014-2018)

A School District is a geographic unit for the local administration of public schools that contain a group of primary and secondary schools. It is responsible for setting localized policies and meeting the community’s public education needs.

• 9th Largest School District in Illinois
• # of Facilities: 23 Schools
• Average SAT Score: 1179
• Average State SAT Score: 1007
• # of Full-Time Certified Staff: 1277

A Park District is an independent special-purpose government that provides public parks and recreation within its boundaries. Some districts also manage cultural facilities, such as monuments, zoos, sports venues, and museums.

• 136 Parks
• 147,100 Residents Served

A Library District is a governmental unit with elected district boards that can establish taxes to fund library services. Library districts can service multiple municipalities as well as unincorporated areas.

• Nichols Library, named after James Lawrence Nichols, began serving Naperville residents in 1898.
• The district currently consists of three libraries within Naperville, IL
• Many Naperville residents volunteer for the libraries. For example, they would deliver library materials to patrons who cannot access the libraries.

A County Board District is a county’s geographic division based on the population from which members of the county board are elected. The county board is both a county government’s legislative and executive branch.

District 5 includes Naperville and parts of Aurora, Warrenville, and Lisle.

• Sadia Covert
• Dawn DeSart
• James D. Healy

A Community College District is a special-purpose district within a state that operates public community colleges, also known as junior college or technical college. A district usually is administered by a Board of Trustees and is publicly funded.

• Year Opened: 1967
• Typical Fall Semester Enrollment: ~26,000 students (The College usually serves residents who mostly live in DuPage County and parts of Will and Cook County).

A State Legislative District (Lower Chamber) is an area from which lower chamber state legislators are elected. The lower chamber is one of two state legislative chambers in a bicameral legislature and is usually referred to as the state Senate.

Grant Wehrli (R)

A State Legislative District (Upper Chamber) is an area from which the upper chamber state legislators are elected. The upper chamber, which is usually referred to as the state House, has fewer members and serve longer terms than members of the lower chamber.

Laura Ellman (D)

A Congressional District is a state’s electoral division, which a member of the House of Representatives is elected from. After the apportionment of congressional seats among all states based on decennial census counts, each state with multiple seats is responsible for establishing congressional districts equal in population.

• Senators: Richard Durbin (D), Tammy Duckworth (D)
• Representative: Sean Casten (D)

An Area Code consists of the first three-digits of a telephone number that identifies the telephone service area in the U.S., Canada, or the Caribbean.

Area Code 630

An Airport Authority is an independent entity that is authorized by the state or municipality to manage an airport or a collection of airports within its corporate limits. It is charged with the maintenance, operation, and administration of its airport(s), often governed by a board of commissioners.

This taxing body manages DuPage Airport, which is one of the reliever airports for O’Hare. It is responsible for many corporate flights between the Chicago region and elsewhere.

DuPage Airport Authority also manages other business enterprises, such as Prairie Landing Golf Club and DuPage Business Center.

A County is a political and administrative division of a state, providing certain local governmental services granted by the state. A county can be made up of townships, municipalities, and unincorporated areas.

• Population: 922,921 (2019)
• Median Household Income: $88,711 (2018)
• Foreign-Born Persons (%): 19.0% (2014-2018)

A MSA is an area containing a municipality with a significant population at its core, together with neighboring communities with strong economic and social connections. It is a statistical boundary as opposed to administrative and contains one or more counties or county-equivalents.

• Population: 9,497,790 (2018) (This is the 3rd largest MSA in the nation)
• Median Age: 37.7 (2018)
• Median Household Income: $70,760 (2018)
• Foreign-Born Persons (%): 19.0% (2014-2018)

A CSA is a combination of metropolitan and micropolitan statistical areas that demonstrate strong economic or social connections.

It is slightly larger than the Chicago-Naperville-Elgin, IL-IN-WI MSA. Chicago’s metropolitan area, Michigan City (Indiana), and Kankakee (Illinois) are included in the CSA and constitute the labor pool market for the region.

A State is a constituent political entity that holds governmental jurisdiction over geographic territory within the country. There are 50 states within the United States that are bound together by a political union and have sovereignty within the federal government.

• The Chicago Water Tower and Pumping Station are the only two buildings that survived the great Chicago fire.
• Chicago’s Old Post Office at 433 West Van Buran is the only post office facility in the world where one can drive a car through.

• Aurora is known as the City of Lights because it’s the first city in the US to fully utilize electric street lighting.
• The Nabisco factory in Chicago is the world’s largest bakery, occupying about 1,800,000 square feet.

A Region is part of a country that are organized by their geographical locations. The U.S. Census organized the United States into four primary areas: West (blue), Midwest (yellow), Northeast (green), and the South (red). They are not definitive, as there are sub-regions within regions. For example, the Northeast can be further organized into New England and Mid-Atlantic.

There are many other ways to define the regions of the United States. For example, the Bureau of Economic Analysis splits the country into eight regions, from New England to the Great Lakes. The U.S. is divided into four time zones (Pacific, Mountain, Central, and Eastern). Hawaii and Alaska have their own time zones too. The Federal Reserve also divides the country into twelve districts, and each district contains a Federal Reserve Bank.

A Country is a political state, nation, or nation-state that is ruled by its own government with established powers over its territory. A country can range drastically in size and does not have to be connected, such as Hawaii, in relation to the rest of the United States.

The United States also includes U.S. Territories, which are sub-national entities that are under the administration and sovereignty of U.S. Government. They consist of permanently inhabited unincorporated territories and islands and areas without a native or permanent population, such as atolls and reefs. The former includes:

•  American Samoa 
•  Guam 
•  Northern Mariana Islands 
•  Puerto Rico 
•  U.S. Virgin Islands 

People in these territories cannot vote for the U.S. President and do not have full representation in the U.S. Congress.

The USMCA is a trade agreement between the U.S. (blue), Mexico (green), and Canada (red) intended to support mutually beneficial free trade. It is an update to the 25-year-old North American Free Trade Agreement (NAFTA) and took effect on July 1, 2020

A Continent is a large, continuous division of the Earth’s landmasses. There are seven continents in the world: Africa, Antarctica, Asia, Europe, North American, South America, and Australia.

• North America is the 3rd largest continent in the world. It is named after Amerigo Vespucci, an Italian explorer, who was the first European who believed North America was a different landmass than the East Indies.
• Mexico City is North America’s largest city, followed by New York City and Los Angeles.
• Lake Superior is the largest freshwater lake in the world.
• Gray white whales migrate the continent’s length and back annually.