nycounty_pop: New York county population, annual.
In donboyd5/bdata: Boyd data

Description Usage Format Details Source Examples

New York county population annual, 1970 through latest available year, from the Census Bureau. One row per state per year.

I have used the following Census Bureau estimates: - intercensal (July 1) estimates prior to 2010 wherever possible (including decennial census years) - postcensal (July 1) estimates for 2010+ - census (April 1) for 1970 and 1980 – I used these because I have not found intercensal estimates. population (April 1).

1	nycounty_pop

Data frame with 1 row per state per year

year: Calendar year, numeric
uni_code: FIPS code or other id if not a FIPS area
rectype: record type
value: Population, number of individuals, numeric

Thus, the change from 1969 to 1970 is from July to April (9 months) and the change from 1970 to 1971 is from April to July (15 months).

Includes all 50 states, United States (US) totals, and District of Columbia (DC) for all years (no values for AK or HI before 1950). Does not include Puerto Rico (may revisit this), Virgin Islands or American Samoa.

All numbers are as reported by the Census Bureau - no calculated values - but I did convert data for earlier years from thousands to number of people so that all values are in the same units.

https://data.ny.gov/Government-Finance/Annual-Population-Estimates-for-New-York-State-and/krt9-ym2k/data.