Following are the top 20 life insurance companies in the United States ranked by total assets. MetLife, established in 1868, is the largest life insurance company in the US with total assets of approximately $900 billion. It is also one of the top 10 life insurance companies in the world by assets and market capitalization.
| Rank | Company | Total Assets, US$b | Balance sheet |
| 1 | MetLife | 898.409 | June 2015 |
| 2 | Prudential Financial | 762.731 | June 2015 |
| 3 | AIG Life Companies | 301.295 | Dec 2014 |
| 4 | John Hancock Financial | 286.869 | Dec 2014 |
| 5 | New York Life | 279.562 | Dec 2014 |
| 6 | TIAA Group | 262.634 | Dec 2014 |
| 7 | Lincoln Financial (Lincoln National Corp) | 255.214 | June 2015 |
| 8 | AEGON USA | 252.737 | Dec 2014 |
| 9 | Northwestern Mutual | 233.158 | March 2015 |
| 10 | Voya Financial | 226.585 | June 2015 |
| 11 | Principal Financial | 222.271 | June 2015 |
| 12 | Jackson National Life | 212.252 | Dec 2014 |
| 13 | MassMutual | 215.096 | March 2015 |
| 14 | AXA Equitable Life Insurance Company | 196.005 | Dec 2014 |
| 15 | Pacific Life | 137.048 | Dec 2014 |
| 16 | Allianz Life | 135.200 | Dec 2014 |
| 17 | Aflac | 115.581 | June 2015 |
| 18 | RiverSource Life (1) | 111.454 | Dec 2014 |
| 19 | Genworth Financial | 109.164 | June 2015 |
| 20 | Thrivent Financial For Lutherans | 76.994 | Dec 2014 |
| 21 | Protective Life Corporation (2) | 69.304 | June 2015 |
(1) – RiverSource Life is as a subsidiary of Ameriprise Financial, Inc.
(2) – Protective Life Corporation was acquired by The Dai-ichi Life Insurance Company in 2015.
Best Life Insurance Companies
Below are the best life insurance companies in the United States with the highest ratings currently awarded from all four leading independent insurance industry ratings agencies.
| Company | A.M. Best | S&P | Moody's | Fitch | |
| 1 | Guardian Life Insurance Company of America | A++ | AA+ | Aa2 | AA+ |
| 2 | Massachusetts Mutual Life Insurance | A++ | AA+ | Aa2 | AA+ |
| 3 | New York Life Insurance Company | A++ | AA+ | Aaa | AAA |
| 4 | Northwestern Mutual | A++ | AA+ | Aaa | AAA |
| 5 | State Farm Life Insurance Company | A++ | AA | Aa1 | AA+ |
| 6 | TIAA-CREF Life Insurance Company | A++ | AA+ | Aa1 | AAA |
| 7 | USAA Life Insurance Company | A++ | AA+ | Aa1 | - |
Ratings as of June 2015