| TETRATEK, INC.Sebastian, FL · Inactive | Sebastian, FL | Corporation | Jul 13, 1981 | Inactive |
| H.T.L. MANAGEMENT, INC.Sebastian, FL · Inactive | Sebastian, FL | Corporation | Jul 23, 1981 | Inactive |
| OILEX TANK LINES, INC.Sebastian, FL · Inactive | Sebastian, FL | Corporation | Aug 5, 1981 | Inactive |
| THE SEBASTIAN METHODIST CHURCH INCSebastian, FL · Active | Sebastian, FL | Nonprofit | Apr 22, 1960 | Active |
| FIRST BAPTIST CHURCH, INCORPORATED OF MARGATE, FLORIDASebastian, FL · Inactive | Sebastian, FL | Nonprofit | Sep 30, 1963 | Inactive |
| SEBASTIAN VOLUNTEER FIRE DEPARTMENT AND RESCUE SQUAD, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Feb 11, 1964 | Inactive |
| SEBASTIAN RIVER AREA INLET CONSERVATION CLUB OF FLORIDA, INC.Location not reported, FL · Inactive | Location not reported, FL | Nonprofit | Mar 17, 1964 | Inactive |
| FLORIDA SCHOOL PLANT MANAGEMENT ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Jun 29, 1964 | Active |
| ROSELAND GARDENS COMMUNITY CHURCH, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Nov 12, 1964 | Inactive |
| SHILOH TABERNACLE MINISTRIES, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Apr 27, 1965 | Active |
| THE DAN ALESSI EVANGELISTIC ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Aug 22, 1967 | Active |
| CHURCH OF CHRIST OF SEBASTIAN, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Sep 23, 1969 | Active |
| SEBASTIAN LIONS CLUB, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Mar 1, 1971 | Inactive |
| SEBASTIAN RIVER MEDICAL CENTER, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Dec 6, 1971 | Inactive |
| WILDLIFE ECOLOGICAL CONSERVATION ASSOCIATION FOR RECREATIONAL ENVIRONMENT, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Feb 25, 1972 | Inactive |
| SEBASTIAN RIVER AREA POST NO. 10210 VETERANS OF FOREIGN WARS OF THE UNITED STATES, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Jul 31, 1973 | Inactive |
| SEBASTIAN RIVER MEDICAL CENTER AUXILIARY, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Dec 17, 1973 | Inactive |
| SHADY REST PROPERTY OWNERS ASSOCIATION, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Jul 31, 1974 | Inactive |
| ORANGE HEIGHTS PROPERTY OWNERS ASSOCIATION, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Aug 6, 1974 | Inactive |
| SEBASTIAN RIVER AREA LITTLE LEAGUE, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Oct 2, 1974 | Active |
| ROSELAND UNITED METHODIST CHURCH, INCORPORATEDSebastian, FL · Inactive | Sebastian, FL | Nonprofit | Aug 19, 1975 | Inactive |
| SEBASTIAN PROPERTY OWNER'S ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Feb 2, 1977 | Active |
| WHISPERING PALMS SOCIAL CLUB, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Feb 21, 1977 | Active |
| ROSELAND GARDENS PROPERTY OWNERS ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Sep 20, 1977 | Active |
| GALLEON TOWNHOUSE ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Oct 31, 1977 | Active |
| SEBASTIAN RIVER JUNIOR WOMAN'S CLUB, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Apr 25, 1978 | Active |
| KASHI CHURCH FOUNDATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Jul 24, 1978 | Active |
| OYSTER BAY II OWNER'S ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Feb 12, 1979 | Active |
| THE FEDERATION OF MOBILE HOME OWNERS OF SHADY REST, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Mar 21, 1979 | Inactive |
| BREEZY VILLAGE HOME OWNERS ASSOCIATION,INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Apr 9, 1979 | Inactive |
| SEBASTIAN OAKS ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Sep 24, 1979 | Active |
| THE RIVER TREES PROPERTY OWNERS ASSOCIATION, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Nov 9, 1979 | Inactive |
| CALVARY BAPTIST CHURCH OF SEBASTIAN, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Mar 6, 1980 | Inactive |
| RIVERS EDGE PROPERTY OWNERS ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Sep 24, 1980 | Active |
| BENT PINE COMMUNITY ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Sep 26, 1980 | Active |
| RIVER GROVE MOBILE HOME OWNERS ASSOCIATION,INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Sep 26, 1980 | Inactive |
| NORTH INDIAN RIVER COUNTY CHAPTER #3234 OF AMERICAN ASSOCIATION OF RETIRED PERSONS, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Oct 3, 1980 | Inactive |
| BARBER STREET PLAZA ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Nov 20, 1980 | Active |
| BENT PINE CONDOMINIUM ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Jan 27, 1981 | Active |
| SEBASTIAN RIVER LIBRARY ASSOCIATION, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Oct 26, 1981 | Inactive |
| OYSTER BAY/POINTE CONDOMINIUM ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Jan 19, 1982 | Active |
| ITALIAN AMERICAN CLUB OF SEBASTIAN, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Jun 9, 1982 | Active |
| SAWYER PARK ASSOCIATION, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Jun 23, 1982 | Active |
| ROSELAND ACRES PROPERTY OWNERS ASSOCIATION, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Aug 5, 1982 | Inactive |
| SEBASTIAN RIVER BAPTIST CHURCH, INC.Sebastian, FL · Active | Sebastian, FL | Nonprofit | Nov 24, 1982 | Active |
| HOLE IN THE WATER GANG, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Jan 3, 1983 | Inactive |
| SEBASTIAN RIVER MEDICAL PLAZA CONDOMINIUM ASSOCIATION, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | Mar 1, 1983 | Inactive |
| THE WHISPERING PALMS MOBILE HOMEOWNERS ASSOCIATION, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | May 3, 1983 | Inactive |
| ERCILDOUNE HEIGHTS HOMEOWNERS ASSOCIATION, INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | May 18, 1983 | Inactive |
| SEBASTIAN PANTHER CHEERLEADERS INC.Sebastian, FL · Inactive | Sebastian, FL | Nonprofit | May 20, 1983 | Inactive |