MCDC Demographic Profile 3 Trend Report Notes

Variable Notes
1. Total Population
Urban Population The definition of "Urban" changed for 2000. Too complicated for this note. In 1990 persons were counted as urban if they lived in a place of 2500 or more, or in an Urbanized Area. For 2000, it does not matter if you actually live within the city limits but whether you live within something called an "Urban Cluster". The latter are similar to Urbanized Areas but for smaller (< 50000) areas.
In Urbanized Areas The Urbanized Area concept was somewhat changed for 2000.
In Urban Clusters Urban Clusters are a new concept for 2000. Thus we have not included this item in the trend report.
Rural Population Rural is just the complement of Urban -- see the comment above for Urban.
Persons Per Sq Mile Water areas are excluded from the denominator. There are small differences in the land areas as measured for the two decades. Divide the total population by this number to get the land area in square miles.
3. Race/Hispanic
White The concept of White (or any other race) "alone" does not apply in 1990 since you were required to specify only a single race. For 2000 we use the "White alone" count, thus excluding persons who indicated they were multi-racial even if one of the races th ey specified was White.
Black See the note for White population (applies to all the race items in this table).
Asian In many 1990 reports the Asian category was actually "Asian and Pacifc Islander". But here it does NOT incldue the PI's, which are in the next category.
Other race Other races alone in 2000 -- does NOT include multi-racial. The race counts for 1990 sum to the total population, but not so for 2000 because the multi-racial category is not shown (because there is no 1990 equivalent item).
Hispanic Hispanic is still NOT A RACE. It is a separate category.
White Not Hispanic White NonHispanic alone in 2000. The "alone" qualifier does not apply in 1990. See note for White pop, above.
14. Veteran and Armed Forces Status
Persons in Armed Forces Difference in universe: Age is 16+ in 1990 and 18+ in 2000.
Civilian Poulation Ages 16 and Over Difference in universe: Age is 16+ in 1990 and 18+ in 2000.
Veteran Difference in universe : Age is 16+ in 1990 and 18+ in 2000
15. Disability
Civilian NonInstitutionalized Pop. Incompatible universe between census periods. The 2000 census uses persons 5 Yrs+. In 2000 it was 16 Yrs+ in 1990.
18. Occupation
Management professional and related occupations Definition may be different because of change from SIC to NAICS between decennial census periods.
Service Occupations Definition may be different because of change from SIC to NAICS between decennial census periods.
Sales and Office Occupations Definition may be different because of change from SIC to NAICS between decennial census periods.
Farming, Fishing and Forestry Definition may be different because of change from SIC to NAICS between decennial census periods.
Production Transportation and Material Moving Definition may be different because of change from SIC to NAICS between decennial census periods.
19. Household Income in 1989
Median Household Income The 1990 value is actually based on 1989 income and has been adjusted for inflation to match the 2000 (1999) value. The inflation factor used was 1.304650, the ratio of the CPI index values for 1999 and 1989.
Average Household Income In 1999 dollars; see note for Median Household Income (Table 19)
21. Other Income Measures
Median Family Income In 1999 dollars; see note for Median Household Income (Table 19)
Average Family Income In 1999 dollars; see note for Median Household Income (Table 19)
Per Capita Income In 1999 dollars; see note for Median Household Income (Table 19)
26. Units in Structure
Mobile Homes 1990 category was specified as "mobile homes or trailers". 2000 data specified as "mobile homes" only.
Boat RV van etc. 1990 category was specified as "other" and 2000 category is listed as Boat, RV, Van, etc.
27. Age of Structure
Units > 50 Yrs Old Same as BuiltBefore1940 in 1990.
Built before 1940 Same as AgeUnit50 in 1990.
Average Age of Units MCDC statistic that estimates ages within intervals using midpoints and assigns arbitrary age of 70 yrs for home built 1939 and earlier.
28. Gross Rents
Median Gross Rent In 1999 dollars; see note for Median Household Income (Table 19)
Average Gross Rent In 1999 dollars; see note for Median Household Income (Table 19)
29. Housing Values
Median Value of Occupied Housing Unit In 1999 dollars; see note for Median Household Income (Table 19)