A ZIP Code is a postal code used by the United States Postal Service (USPS). Introduced in 1963, the basic format consisted of five digits. In 1983, an extended ZIP+4 code was introduced; it included the five digits of the ZIP Code, followed by a hyphen and four digits that designated a more specific location.
Placer County, officially the County of Placer, is a county in the U.S. state of California. As of the 2020 census, the population was 404,739. The county seat is Auburn.
An unincorporated area is a region that is not governed by a local municipal corporation. Widespread unincorporated communities and areas are a distinguishing feature of the United States and Canada. Most other countries of the world have either no unincorporated areas at all, or these are very rare; typically remote, outlying, sparsely populated, or uninhabited areas.
A census-designated place (CDP) is a concentration of population defined by the United States Census Bureau for statistical purposes only. CDPs have been used in each decennial census since 1980 as the counterparts of incorporated places, such as self-governing cities, towns, and villages, for the purposes of gathering and correlating statistical data. CDPs are populated areas that generally include one officially designated but currently unincorporated community, for which the CDP is named, plus surrounding inhabited countryside of varying dimensions and, occasionally, other, smaller unincorporated communities as well. CDPs include small rural communities, edge cities, colonias located along the Mexico–United States border, and unincorporated resort and retirement communities and their environs.
This is a list of properties and historic districts in Oklahoma that are designated on the National Register of Historic Places. Listings are distributed across all of Oklahoma's 77 counties.
This is a list of properties and historic districts in Iowa that are listed on the National Register of Historic Places. There are listings in all of Iowa's 99 counties, adding up to over 2,300 total.
This is a list of properties and historic districts in Montana that are listed on the National Register of Historic Places. The state's more than 1,100 listings are distributed across all of its 56 counties.
Buildings, sites, districts, and objects in Delaware listed on the National Register of Historic Places:
There are more than 1,800 properties and districts listed on the National Register of Historic Places in Florida. They are distributed through 66 of the state's 67 counties. Of these, 42 are National Historic Landmarks.
This National Park Service list is complete through NPS recent listings posted April 1, 2022.
There are more than 1,500 properties and historic districts in Colorado listed on the National Register of Historic Places. They are distributed over 63 of Colorado's 64 counties; only the City and County of Broomfield has none.
This is a list of properties and districts listed on the National Register of Historic Places in Connecticut. There are more than 1,500 listed sites in Connecticut. All 8 counties in Connecticut have listings on the National Register.
This is a list of properties and districts in Indiana that are listed on the National Register of Historic Places. There are over 1,900 in total. Of these, 39 are National Historic Landmarks. Each of Indiana's 92 counties has at least two listings.
There are over 1,400 buildings, sites, districts, and objects in Kansas listed on the National Register of Historic Places in Kansas. NRHP listings appear in 101 of the state's 105 counties.
This is a list of properties and districts in New Mexico that are on the National Register of Historic Places. There are more than 1,100 listings. Of these, 46 are National Historic Landmarks. There are listings in each of the state's 33 counties.
This is a list of properties and historic districts in Nevada that are listed on the National Register of Historic Places. There is at least one listing in each of Nevada's 16 counties and one independent city.
This is a list of properties and districts listed on the National Register of Historic Places in Rhode Island. As of May 29, 2015, there are more than 750 listed sites in Rhode Island. All 5 of the counties in Rhode Island have listings on the National Register.