Municipal boundaries in Massachusetts have not changed since 1938 when the construction of the Quabbin Reservoir resulted in the disincorporation of several towns.
Census geographies such as tracts, block groups, and blocks however may change for every census to accommodate the changing landscape of population and housing unit changes. As such for longitudinal comparison a weighted crosswalk between census geographies at the same hierarchy level is useful.
Additionally, a nested crosswalk between census geographies, and municipalities is also useful for getting geographic distributions.
These set of data keys and crosswalks provide for the above two kinds of data, and are described in detail below.
mapcdatakeys::census_xw_bl10
This crosswalk provides 2020 & 2010 block level data on Housing Units and Population in 2010 census block geographies for easy cross-comparison.
head(mapcdatakeys::census_xw_bl10)## # A tibble: 6 x 10
## bl10_id hu_2020 ohu_2020 pop_2020 hu_2010 pop_2010 huch1020p popch1020p
## <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 2.50e14 684 607 1207 226 455 203. 165.
## 2 2.50e14 37 36 224 59 177 -37.8 26.3
## 3 2.50e14 172 21 45 182 52 -5.49 -13.5
## 4 2.50e14 847 822 2068 187 595 353. 248.
## 5 2.50e14 686 457 1367 712 2247 -3.65 -39.2
## 6 2.50e14 508 429 821 0 0 0 0
## # ... with 2 more variables: huch1020 <dbl>, popch1020 <dbl>
mapcdatakeys::census_xw_bl20
This crosswalk provides 2020 & 2010 block level data on Housing Units and Population in 2020 census block geographies for easy cross-comparison.
head(mapcdatakeys::census_xw_bl20)## # A tibble: 6 x 9
## bl20_id hu_2010 pop_2010 hu_2020 pop_2020 huch1020p popch1020p huch1020
## <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 2.50e14 0 0 0 0 NA NA 0
## 2 2.50e14 18 6 20 15 -8.44 -59.5 -2
## 3 2.50e14 0 0 0 0 NA NA 0
## 4 2.50e14 0 0 0 0 NA NA 0
## 5 2.50e14 0 0 0 0 NA NA 0
## 6 2.50e14 0 0 0 0 NA NA 0
## # ... with 1 more variable: popch1020 <dbl>
mapcdatakeys::census_xw_bg10
This crosswalk provides 2020 & 2010 Block Group level data on Housing Units and Population in 2010 census Block Group geographies for easy cross-comparison.
head(mapcdatakeys::census_xw_bg10)## # A tibble: 6 x 10
## bg10_id hu_2020 hu_2010 pop_2020 pop_2010 ohu_2020 huch1020p popch1020p
## <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 250010101001 1271 1136 995 763 607 11.9 30.4
## 2 250010101002 957 921 638 494 377 3.91 29.1
## 3 250010101003 877 786 643 569 397 11.6 13.0
## 4 250010101004 960 791 729 516 439 21.4 41.3
## 5 250010101005 918 860 665 600 379 6.74 10.8
## 6 250010102061 999 996 926 660 449 0.301 40.3
## # ... with 2 more variables: huch1020 <dbl>, popch1020 <dbl>
mapcdatakeys::census_xw_bg20
This crosswalk provides 2020 & 2010 Block Group level data on Housing Units and Population in 2020 census Block Group geographies for easy cross-comparison.
head(mapcdatakeys::census_xw_bg20)## # A tibble: 6 x 9
## bg20_id hu_2010 hu_2020 pop_2010 pop_2020 huch1020p popch1020p huch1020
## <dbl> <dbl> <dbl> <dbl> <dbl> <chr> <chr> <dbl>
## 1 250010101001 1136 1271 763 992 11.8838028~ 30.013106~ 135
## 2 250010101002 921 957 494 637 3.90879478~ 28.947368~ 36
## 3 250010101003 786 877 569 642 11.5776081~ 12.829525~ 91
## 4 250010101004 791 960 516 729 21.3653603~ 41.279069~ 169
## 5 250010101005 860 918 600 664 6.74418604~ 10.666666~ 58
## 6 250010102061 996 1002 660 926 0.60240963~ 40.303030~ 6
## # ... with 1 more variable: popch1020 <dbl>
mapcdatakeys::census_xw_ct10
This crosswalk provides 2010 & 2020 Census Tract level data on Housing Units and Population in 2010 census Census Tract geographies for easy cross-comparison.
head(mapcdatakeys::census_xw_ct10)## # A tibble: 6 x 10
## ct10_id hu_2020 hu_2010 pop_2020 pop_2010 ohu_2020 huch1020p popch1020p
## <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
## 1 25001010100 4983 4494 3670 2942 2199 10.9 24.7
## 2 25001010206 4256 4305 3569 2750 1797 -1.14 29.8
## 3 25001010208 2998 3077 2451 2003 1249 -2.57 22.4
## 4 25001010304 2750 2706 2672 2421 1311 1.63 10.4
## 5 25001010306 3359 3254 3078 2535 1491 3.23 21.4
## 6 25001010400 2457 2359 3346 2999 1633 4.15 11.6
## # ... with 2 more variables: huch1020 <dbl>, popch1020 <dbl>
mapcdatakeys::census_xw_ct20
This crosswalk provides 2020 & 2010 Block Group level data on Housing Units and Population in 2020 census Census Tract for easy cross-comparison.
head(mapcdatakeys::census_xw_ct20)## # A tibble: 6 x 9
## ct20_id hu_2010 hu_2020 pop_2010 pop_2020 huch1020p popch1020p huch1020
## <dbl> <dbl> <dbl> <dbl> <dbl> <chr> <chr> <dbl>
## 1 25001010100 4494 4983 2942 3664 10.88117489~ 24.541128~ 489
## 2 25001010206 4306 4263 2750 3566 -0.99860659~ 29.672727~ -43
## 3 25001010208 3076 3001 2003 2454 -2.43823146~ 22.516225~ -75
## 4 25001010304 2705 2749 2421 2672 1.626617375~ 10.367616~ 44
## 5 25001010306 3254 3356 2535 3080 3.134603564~ 21.499013~ 102
## 6 25001010400 2359 2459 3000 3345 4.239084357~ 11.5 100
## # ... with 1 more variable: popch1020 <dbl>
mapcdatakeys::geog_xw_2010
This crosswalk provides an easy way to categorize the 2010 blocks into various geographies
head(mapcdatakeys::geog_xw_2010)## # A tibble: 6 x 10
## bl10_id bg10_id ct10_id cosub_cn10 muni_id muni_name county statefp countyfp
## <dbl> <dbl> <dbl> <dbl> <dbl> <chr> <chr> <dbl> <chr>
## 1 2.50e15 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 2 2.50e15 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 3 2.50e15 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 4 2.50e15 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 5 2.50e15 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 6 2.50e15 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## # ... with 1 more variable: cousubfp <chr>
mapcdatakeys::geog_xw_2020
This crosswalk provides an easy way to categorize the 2020 blocks into various geographies
head(mapcdatakeys::geog_xw_2020)## # A tibble: 6 x 10
## bl20_id bg20_id ct20_id cosub_cn20 muni_id muni_name county statefp countyfp
## <dbl> <dbl> <dbl> <dbl> <dbl> <chr> <chr> <dbl> <chr>
## 1 2.50e14 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 2 2.50e14 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 3 2.50e14 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 4 2.50e14 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 5 2.50e14 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## 6 2.50e14 2.50e11 2.50e10 2500155500 242 Province~ Barns~ 25 001
## # ... with 1 more variable: cousubfp <chr>