usa.ipums.org的 10 大竞争对手

census.gov

The Census Bureau has several policies to ensure the data we collect are protected and your privacy is respected.

nass.usda.gov

usda national agricultural statistics service information. nass publications cover a wide range of subjects, from traditional crops, such as corn and wheat, to specialties, such as mushrooms and flowers; from calves born to hogs slaughtered; from agricultural prices to land in farms. the agency has the distinction of being known as the fact finders of u.s. agriculture due to the abundance of information we produce. the national agricultural statistics service's mission is to serve the united states, its agriculture, and its rural communities by providing meaningful, accurate, and objective statistical information and services.

data.census.gov

learn about america's people, places, and economy on the official united states census bureau data platform. explore, customize, and download census data tables, maps, charts, profiles, and microdata.

nces.ed.gov

Explore NAEP Assessment Data.

nber.org

founded in 1920, the nber is a private, non-profit, non-partisan organization dedicated to conducting economic research and to disseminating research findings among academics, public policy makers, and business professionals.

aeaweb.org

How much do poor people actually support redistribution?

idocket.com

idocket.com is an on-line database that can be used to track court cases filed in various u.s. counties.