CO-EST2005-compchg2001: Annual Estimates of the Components of Population Change 
for Counties of [STATE]: July 1, 2000 to July 1, 2001

File:   7/1/2005 County Population Estimates File for Internet Display

Source: Population Estimates Program, U.S. Bureau of the Census
Release date:  March 16, 2006

Sort order of observations States in alpha sort.

Data fields (in order of which they appear):

SUMLEV			Geographic Summary Level
STATE			State FIPS code
COUNTY			County FIPS code
REGION			Census region code
DIVISION		Census division code
CTYNAME			County name
STNAME			State name
NPOPCHG_2001		Numeric Change in resident total population estimate 
			7/1/2000 to 7/1/2001
BIRTHS2001		Births in period 7/1/2000 to 7/1/2001 – Number
DEATHS2001		Deaths in period 7/1/2000 to 7/1/2001 – Number
INTERNATIONALMIG2001	Net international migration in period 7/1/2000 to
			7/1/2001 - Number
INTERNALMIG2001		Net internal migration in period 7/1/2000 to 7/1/2001 – 
			Number
RESIDUAL2001		Residual for period 7/1/2000 to 7/1/2001 – Number
NATURALINC2001		Natural increase in period 7/1/2000 to 7/1/2001 – Number
NETMIG2001		Net migration in period 7/1/2000 to 7/1/2001 – Number
RBIRTH2001		Birth rate in period 7/1/2000 to 7/1/2001
RDEATH2001		Death rate in period 7/1/2000 to 7/1/2001 
RINTERNATIONALMIG2001	Net international migration rate in period 7/1/2000 to
			7/1/2001
RINTERNALMIG2001	Net internal migration rate in period 7/1/2000 to 
			7/1/2001
RNATURALINC2001		Rate of natural increase in period 7/1/2000 to 7/1/2001
RNETMIG2001		Rate of net migration in period 7/1/2000 to 7/1/2001

The key for REG code is as follows:

        0 = United States Total
        1 = Northeast
        2 = Midwest
        3 = South
        4 = West

The key for DIV code is as follows:

        0 = United States Total
        1 = New England
        2 = Mid-Atlantic
        3 = East North Central
        4 = West North Central
        5 = South Atlantic
        6 = East South Central
        7 = West South Central
        8 = Mountain
        9 = Pacific

Calculation of the Rates for the period are as follows:


RBIRTH2001
(BIRTHS2001/((POPESTIMATE2000 + POPESTIMATE2001)/2))*1000

RDEATHS2001
(DEATHS2001/((POPESTIMATE2000 + POPESTIMATE2001)/2))*1000

RINTERNATIONALMIG2001
(INTERNATIONALMIG2001/((POPESTIMATE2000 + 
POPESTIMATE2001)/2))*1000

RINTERNALMIG2001
(INTERNALMIG2001/((POPESTIMATE2000 + POPESTIMATE2001)/2))*1000

RNATURALINC2001
((BIRTH2001 – DEATH2001)/((POPESTIMATE2000 + 
POPESTIMATE2001)/2))*1000

RNETMIG2001
((INTERNATIONALMIG2001 + INTERNALMIG2001)/((POPESTIMATE2000 + 
POPESTIMATE2001)/2))*1000