1. INTRODUCTION
How many inhabitants does the United States have (2018)? Here I leave you a reliable answer according to the most recent data published by the United States Census Bureau, the Central Intelligence Agency and Wikipedia’s population prospects for 2018.
I hope it helps. 🙂
2. WHAT IS THE POPULATION OF THE UNITED STATES? (2018)
The United States has an approximate population of 327 million inhabitants (2018).
– United States Census Bureau (1/18/2018): 327,0 million.
– Central Intelligence Agency (15/7/2017): 326,6 million.
– Population prospect by Wikipedia (7/1/2018): 327,9 million.

U.S. population by state (image: Ali Zifan – Wikimedia Commons).
3. MORE INFORMATION AND REFERENCES
- Countries by population (2018).
- Census.gov (2018). U.S. and World Population Clock. Avaliable [HERE]. (*) Real time population clock!
- Cia.gov (2018). The World Factbook > United States > People and Society > Population. Avaliable [HERE].
- Wikipedia.org (2018). Países y territorios dependientes por población. Avaliable [HERE].
- Ali Zifan – Wikimedia Commons (2013). Map of each state’s population as of 2013. Avaliable [HERE].
Great website!!!