county_merge.py output (first few lines)

STATEFP,COUNTYFP,GEOID,ALAND,AWATER,NAME,B01001_001E,state,county,pop,percent
01,001,01001,1539602123,25706961,"Autauga County, Alabama",55200,01,001,55200.0,1.1347097856385209
01,003,01003,4117546676,1133055836,"Baldwin County, Alabama",208107,01,003,208107.0,4.277917560867313
01,005,01005,2292144655,50538698,"Barbour County, Alabama",25782,01,005,25782.0,0.5299834727052961
01,007,01007,1612167481,9602089,"Bibb County, Alabama",22527,01,007,22527.0,0.46307259675867685
01,009,01009,1670103911,15015423,"Blount County, Alabama",57645,01,009,57645.0,1.1849700288610967
01,011,01011,1613059160,6054988,"Bullock County, Alabama",10352,01,011,10352.0,0.21279919748061538
01,013,01013,2012002530,2701198,"Butler County, Alabama",20025,01,013,20025.0,0.4116406423444091
01,015,01015,1569189622,16627597,"Calhoun County, Alabama",115098,01,015,115098.0,2.3659932410764943
01,017,01017,1545085607,16971701,"Chambers County, Alabama",33826,01,017,33826.0,0.6953386450907356
01,019,01019,1433623321,120308339,"Cherokee County, Alabama",25853,01,019,25853.0,0.531442972610737