{"version":"1.0.0","prepared_on":"2026-10-23","source_sha256":"ce54d409213643d7667f1421827fbdeed6511c12a7b4b5aade53a5f32151453d","records":124071,"zips":31050,"years":{"2019":31005,"2020":31024,"2021":31014,"2022":31028},"states":["DC","DE","FL","GA","HI","IA","ID","IL","IN","KS","KY","LA","MD","MI","MN","MO","MS","MT","NC","ND","NE","NM","NV","NY","OH","OK","OR","PA","SC","SD","TN","TX","UT","VA","WA","WI","WV","WY"],"missing_states":["AK","AL","AR","AZ","CA","CO","CT","MA","ME","NH","NJ","RI","VT"],"prefixes":["10","11","12","13","14","15","16","17","18","19","20","21","22","23","24","25","26","27","28","29","30","31","32","33","34","37","38","39","40","41","42","43","44","45","46","47","48","49","50","51","52","53","54","55","56","57","58","59","60","61","62","63","64","65","66","67","68","69","70","71","73","74","75","76","77","78","79","82","83","84","87","88","89","96","97","98","99"],"method":"Source scores, grades and stored pooled dense ranks remain unchanged. Annual display rank = 1 + number of records in the same source year with a strictly higher supplied score. The denominator is that year’s covered ZIPs.","limits":"Allocation method, score formula and underlying agency release are not included in the supplied CSV. Allocated counts are estimates, not observed counts of individuals. This is migration context, not birthplace or heritage evidence. The same population value repeats across years and is not used as an annual denominator. Coverage is 37 states plus DC; 13 states are absent.","geography":"Source five-digit postal labels and county codes are retained. No ZCTA or city-boundary join is inferred."}