| bangladesh | chittagong division | methylomonas sp. enrichment culture | species | 1 | 0 |
| bangladesh | dhaka division | methylomonas sp. | species | 1 | 0 |
| belgium | | methylomonas lenta | species | 4 | 0 |
| belgium | | methylomonas sp. r-45362 | species | 1 | 0 |
| belgium | | methylomonas sp. r-45363 | species | 1 | 0 |
| belgium | | methylomonas sp. r-45364 | species | 1 | 0 |
| belgium | | methylomonas sp. r-45371 | species | 1 | 0 |
| belgium | | methylomonas sp. r-45372 | species | 1 | 0 |
| belgium | | methylomonas sp. r-45374 | species | 1 | 0 |
| belgium | | methylomonas sp. r-45378 | species | 1 | 0 |
| belgium | | methylomonas sp. r-45383 | species | 1 | 0 |
| belgium | | methylomonas sp. r-49799 | species | 2 | 0 |
| belgium | flemish region | methylomonas koyamae | species | 764 | 0 |
| belgium | flemish region | methylomonas lenta | species | 344 | 0 |
| belgium | flemish region | methylomonas methanica | species | 522 | 0 |
| brazil | | uncultured methylomonas sp. | species | 4 | 0 |
| canada | british columbia | methylomonas sp. | species | 1 | 0 |
| china | | methylomonas sp. | species | 1 | 0 |
| china | | uncultured methylomonas sp. | species | 4 | 0 |
| china | heilongjiang | uncultured methylomonas sp. | species | 2 | 0 |
| china | hunan | uncultured methylomonas sp. | species | 4 | 0 |
| germany | | methylomonas sp. | species | 4 | 0 |
| germany | | methylomonas sp. eba | species | 1 | 0 |
| germany | | methylomonas sp. ebb | species | 1 | 0 |
| germany | baden-wuerttemberg | methylomonas sp. lc 1 | species | 3 | 0 |
| india | | methylomonas sp. | species | 2 | 0 |
| india | | methylomonas sp. kb3 | species | 2 | 0 |
| india | | methylomonas sp. sn4 | species | 1 | 0 |
| india | | uncultured methylomonas sp. | species | 6 | 0 |
| indonesia | | methylomonas koyamae | species | 1 | 0 |
| indonesia | central kalimantan province | uncultured methylomonas sp. | species | 4 | 0 |
| iran | east azerbaijan province | methylomonas sp. | species | 1 | 0 |
| italy | | uncultured methylomonas sp. | species | 3 | 0 |
| japan | | methylomonas koyamae | species | 2 | 0 |
| japan | | methylomonas sp. | species | 3 | 0 |
| japan | aichi prefecture | methylomonas koyamae | species | 7 | 0 |
| japan | kyoto prefecture | methylomonas sp. r4f | species | 3 | 0 |
| japan | okayama prefecture | methylomonas koyamae | species | 180 | 0 |
| japan | okayama prefecture | methylomonas sp. sm-2017 | species | 4 | 0 |
| japan | okinawa prefecture | uncultured methylomonas sp. | species | 1 | 0 |
| japan | shiga prefecture | methylomonas sp. b2z | species | 2 | 0 |
| netherlands | | uncultured methylomonas sp. | species | 1 | 0 |
| norway | hordaland county | methylomonas sp. | species | 1 | 0 |
| poland | | methylomonas sp. enrichment culture | species | 2 | 0 |
| romania | | uncultured methylomonas sp. | species | 1 | 0 |
| russia | | methylomonas sp. | species | 1 | 0 |
| russia | | methylomonas sp. rd2 | species | 1 | 0 |
| russia | karelia republic | methylomonas paludis | species | 1 | 0 |
| south africa | | methylomonas koyamae | species | 296 | 0 |
| south africa | | methylomonas sp. r-49807 | species | 2 | 0 |
| south korea | | methylomonas sp. | species | 3 | 0 |
| south korea | | methylomonas sp. dh-1 | species | 2 | 0 |
| south korea | north chungcheong province | methylomonas sp. dh-1 | species | 4 | 0 |
| spain | castile and leon | uncultured methylomonas sp. | species | 12 | 0 |
| ukraine | donetsk oblast | methylomonas rubra | species | 2 | 0 |
| united kingdom | | methylomonas methanica | species | 1 | 0 |
| united kingdom | | methylomonas methanica mc09 | no rank | 4 | 0 |
| united kingdom | | uncultured methylomonas sp. | species | 2 | 0 |
| united states | | methylomonas sp. 11b | species | 1 | 0 |
| united states | | uncultured methylomonas sp. | species | 1 | 0 |
| united states | california | methylomonas | genus | 0 | 1 |
| united states | california | methylomonas sp. | species | 2 | 0 |
| united states | georgia | methylomonas | genus | 0 | 1 |
| united states | georgia | uncultured methylomonas sp. | species | 2 | 0 |
| united states | idaho | methylomonas | genus | 0 | 2 |
| united states | illinois | methylomonas sp. | species | 848 | 0 |
| united states | north carolina | uncultured methylomonas sp. | species | 2 | 0 |
| united states | washington | methylomonas rubra | species | 1 | 0 |
| united states | washington | methylomonas sp. lw13 | species | 90 | 0 |
| united states | washington | methylomonas sp. lw15 | species | 4 | 0 |
| united states | washington | methylomonas sp. lw21 | species | 1 | 0 |
| vietnam | | methylomonas sp. bg3 | species | 2 | 0 |