1970 Census data at Lawrence Berkeley National Laboratory

Second count population (complete count): 53 million data values
0.3 GB compressed, 0.5 GB uncompressed
Fourth count population (sample count): 460 million data values
0.8 GB compressed, 4.6 GB uncompressed
Fifth count population (sample count): 5 million data values
0.1 GB compressed, 0.1 GB uncompressed
Fifth count special tabulation, pop and housing, (sample count): 260 million data values
0.6 GB compressed, 2.6 GB uncompressed
Sixth count population (sample count): 210 million data values
0.6 GB compressed, 2.1 GB uncompressed

Total of the files above: 2.5 GB compressed, 10 GB uncompressed.

Other 1970 Census data not listed below include MEDLIST and MEDLIST-X (MEDX); 1970 Census tract map files; the 1970 Census Public Use Sample; Sixth Count Housing data (California only); and some small extracts from the Population First Count and Fourth Count.

Only MEDX, the tract map files, and the Fifth Count special tabulation for BG/EDs (below) are installed in SEEDIS.

All the files listed below are stored on disk in an internal Census Bureau computer, in SEEDIS compressed format. Harvard Holmes has written a short C program seed2txt which will convert a SEEDIS compressed file to ASCII text.

Second Count population (complete count): 53 million data values

0.3 GB compressed, 0.5 GB uncompressed

644 data elements:

20 geographic identifiers

18 cells in table 1

606 cells in table 2

(other tables were not processed at LBNL)

83,062 geographic areas:

52 states including DC and Puerto Rico

243 SMSA's including Puerto Rico

281 state parts of SMSA's including Puerto Rico

3217 counties including Puerto Rico

11,975 places with pop 1000+, including Puerto Rico

32,446* MCD/CCDs, including Puerto Rico (*IL and WI lost - tapes unreadable)

34,848 census tracts, including Puerto Rico

Fourth Count population (sample count): 460 million data values

0.8 GB compressed, 4.6 GB uncompressed

5918 data elements:

28 geographic identifiers

1178 cells for each of five races (total, white, black, other, Spanish)
(total=white+black+other; Spanish are of any race)
(race/ethnicity breakdown unavailable for Puerto Rico)

78,320 geographic areas:

52 states including DC and Puerto Rico

243 SMSA's including Puerto Rico

281 state parts of SMSA's including Puerto Rico

3217 counties including Puerto Rico

6945 places with pop 2500+, excluding Puerto Rico

32,997* MCD/CCDs, excluding Puerto Rico
(*GA,MD,NC,SC presently unavailable - tarfile checksum error)

34,585 census tracts, excluding Puerto Rico

Fifth Count population (sample count): 5 million data values

0.1 GB compressed, 0.1 GB uncompressed

576 data elements:

20 geographic identifiers

556 cells in 27 tables

9448 geographic areas:

874 3-digit ZIP codes, excluding Puerto Rico

8574* state parts of 5-digit ZIP codes, excluding Puerto Rico
(*AK,IN,IL,IA,KS,MI,MN,MO,MT,NE,ND,OH,SD,UT,VT,WI,WY presently unavailable - tarfile checksum error)

Fifth Count special tabulation, pop and housing, (sample count): 260 million data values

0.6 GB compressed, 2.6 GB uncompressed

928 data elements:

928 cells in 53 tables

281,292 geographic areas:

224,632 block groups and enumeration districts (BG/EDs), excluding Puerto Rico

26,475 MCD's in rural counties
30,185 tracts in urban counties

Sixth Count population (sample count): 210 million data values

0.6 GB compressed, 2.1 GB uncompressed

151,602 data elements:

151,602 cells in 92 tables

1409 geographic areas:

51 states, excluding Puerto Rico

51 states, urban portions only

51 states, rural farm portions only

51 states, rural nonfarm portions only
277 state parts of SMSAs, excluding Puerto Rico
479 SMSA counties, excluding Puerto Rico
449 places, population 50,000+ or central city of SMSA

back to U.S. Census Data at LBNL