This site's own database holds 2023 Census American Community Survey income data for all 3,220 U.S. counties. The highest median household income in the country is Loudoun County, Virginia: $178,707. The lowest is Las Marías, Puerto Rico: $16,170. Same year, same Census Bureau survey, same methodology, same federal government behind both numbers. The gap between them is 11 times.^[1]

This site has made a version of this argument before, in a piece comparing Newark, New Jersey to Palo Alto, California — a 4.4-times gap between two mainland cities. This one is wider, and it is not secondary reporting; it comes directly from this site's own first-party ingest of the same federal dataset used for every county in the country.

Las Marías is not a foreign place drawn into an unfair comparison. Puerto Ricans have been United States citizens since March 2, 1917, under the Jones-Shafroth Act, which Congress passed and President Wilson signed — statutory citizenship, not a courtesy or a technicality.^[2] The same passport, the same currency, the same Census Bureau counting both places by the same rules. Not two countries under one flag. One country, counted honestly, eleven times apart.

Building this piece meant trying to do something more specific than repeat the income number: pair it with crime data for the same places, the same way this site holds both for most of the country. That pairing surfaced a second finding, unplanned. This site's own crime dataset, drawn from the FBI's own reporting system, contains zero reporting agencies anywhere in Puerto Rico — not a low number, zero. That is not particular to this site's own ingest. In 2021, when the FBI required every agency to switch to its newer incident-based reporting system or stop being counted at all, nearly 4,000 of the roughly 16,000 agencies that had reported the year before dropped out entirely — including most agencies in five of the six most populous states, and, in this dataset, the entirety of Puerto Rico.^[3]

Las Marías is not just the lowest-income county in a country that also holds the highest. It is a place the same federal government has, by two separate and unrelated measures, essentially stopped counting — economically last, and administratively invisible in the same national crime picture that includes cities eleven times richer than it is. Income was never the whole story here, either — a companion piece traces Puerto Rico's own removal from the world's most-cited happiness rankings, ten years after it briefly ranked ahead of the United States itself.