Documentation and Errata to Accompany the Release of July 1, 1999 Population Estimates for Incorporated Places and Minor Civil Divisions The Census Bureau released these population estimates to the public on October 20, 2000. These estimates incorporate revisions of estimates from previous years and the results of special censuses and test censuses conducted by the Census Bureau before Census 2000. Geographic Changes Information about geographic changes to governmental units in each state from January 1, 1990 through January 1, 1998 are available at our Internet site at: . Glossary of Terms 1) Census Place/Minor Civil Division (MCD) Codes - The Census Bureau maintains a coding system that uniquely identifies all places with four-digit codes and MCDs with three digit codes. 2) Central City - Central cities consist of one or more of the largest population and employment centers of a metropolitan area. There are 554 central cities, including 12 in Puerto Rico. Almost all central cities are incorporated places, with exceptions including Honolulu, Hawaii; Arlington, Virginia; Yarmouth (Barnstable County), Massachusetts; Dover (Ocean County), New Jersey; and zonas urbanas in Puerto Rico. 3) Consolidated Cities - A consolidated city is an incorporated place that has combined its governmental functions with a county or subcounty entity but contains one or more other semi-independent incorporated places that function as local governments within the consolidated government. Estimates are not shown for the consolidated city. Instead, estimates are shown for the consolidated city "remainder," which is the consolidated city minus the semi-independent places located within the consolidated city. In 1999, estimates were produced for the following consolidated city remainders: Butte-Silver Bow, Montana; Columbus, Georgia; Indianapolis, Indiana; Jacksonville, Florida; Milford, Connecticut; Nashville-Davidson, Tennessee; Athens, Georgia; and Augusta-Richmond County, Georgia. 4) FIPS Code - Federal Information Processing Standards (FIPS) codes uniquely identify each area. The codes are issued by the National Institute of Standards and Technology of the U.S. Department of Commerce. 5) Minor Civil Division (MCD) - A type of governmental unit that is the primary legal subdivision of a county in 28 states and created to govern or administer an area rather than a specific population. The several types of MCDs are identified by a variety of terms, such as town, township, and district, and include both functioning and nonfunctioning governmental units. The Census Bureau produces population estimates for all functioning MCDs and only for nonfunctioning MCDs in counties that contain at least one functioning MCD. 6) Place - A place is either legally incorporated under the laws of its respective state, or identified by the Census Bureau as a Census Designated Place (CDP). Incorporated places have political/statistical descriptions of city, town (except in New England, New York, and Wisconsin), borough (except in Alaska and New York), or village. Population estimates are only produced for incorporated places (with the exception of the Honolulu, Hawaii CDP and the Arlington, Virginia CDP). Incorporated places can cross both county and MCD boundaries. When an incorporated place is in more than one county or MCD, files organized byccounty or MCD show the place name with the designation "pt." (abbreviation for "part"). 7) Population Estimates Base - The April 1, 1990 census population is a count of the number of persons residing in an area (resident population) as reported in the 1990 census of population, or recalculated to match legal boundary changes and geocoding enhancements in the Census Bureau's TIGER(R) system. More information on these changes can be found at: . 8) Estimated Population - The estimated population is a computed number of people living in an area (resident population) as of July 1. The estimated population at the place level is calculated by using the change in the number of housing units (from April 1, 1990 to the estimate date) at the place level to distribute population change separately computed for the county level. County estimates are calculated using a demographic components of change model that incorporates information on natural change (births and deaths) and net migration (net domestic migration and net movement from abroad) in the area since the reference date. Additional information on the methodology used to produce these population estimates is available on our Internet site at: . 9) Remainders - The term "remainder" following a city name indicates that it is part of a consolidated city-county government and that the population of other incorporated places in the county have been excluded from the population totals shown here. See Consolidated Cities. 10) Summary Level - a three-digit numeric code used by the Census Bureau to designate different geographic levels or areas. The following summary level codes are used in the presentation of the subcounty population estimates: 040 State 050 County 060 Minor Civil Division - the Census Bureau produces estimates for MCDs in 20 states. These legally defined county subdivisions are known by various descriptions, including towns (in New England, New York and Wisconsin), townships, and districts. 071 MCD place part - incorporated places can cross MCD boundaries, therefore a place name (with the pt. following it) can appear in more than one MCD. The 071 code designates that part of a place that is within one MCD. 157 County place part - incorporated places can cross county boundaries, therefore a place name (with the pt. following it) can appear in more than one county. The 157 code designates that part of a place that is within one county. 162 Incorporated Place total Errata The following areas were omitted from the 1999 estimates time series due to reporting or processing errors. They will be reinstated for Census 2000 publications and subsequent estimates reporting. 1) Bayview town, Texas – located in Cameron County, this incorporate place was published in several previous decennial censuses. The Census place code has been changed from 0317 to 0316. 2) Nolensville town, Tennessee - located in Williamson County, this former CDP was incorporated in August 1996 (Census Place: 1047; FIPS: 53460). 3) Sparta village, Michigan - Kent County incorrectly reported that Sparta village (Census Code: 2530; FIPS: 75420) disincorporated on 2/19/1998. This was subsequently corrected during the 1999 Boundary and Annexation Survey (BAS) and will appear in Census 2000 tabulations. 4) Sullivan city, Texas - located in Hidalgo County, this former CDP was incorporated in May 1997 (Census place: 4118; FIPS: 70868). 5) Washington township (105), Franklin County (049), Ohio, and the parts of two places that are in the township: Dublin city (pt), Census Place: 1195 and Hilliard city (pt), Census Place: 1830 The 1990 base population of the following areas was reduced to zero, due to processing errors. 1) Shawnee township (070), Johnson County (091), Kansas 2) Willowbrook city, Kansas Source: U.S. Census Bureau Internet Release Date: October 20, 2000 Last Revised: February 21, 2001