| THE MC KAY LATERAL COMPANYLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Jun 6, 1932 | Good Standing |
| THE FIRST EVANGELICAL LUTHERAN CHURCH OF LONGMONTLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Apr 21, 1938 | Good Standing |
| THE CHURCH OF CHRIST OF LONGMONT, COLORADOLongmont, CO · Good Standing | Longmont, CO | Nonprofit | May 14, 1946 | Good Standing |
| THE SMITH AND EMMONS DITCH COMPANYLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Jun 25, 1946 | Good Standing |
| LONGS PEAK POST NO. 2601, VETERANS OF FOREIGN WARS OF THEUNITED STATES, LONGMONT, COLORADOLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Feb 25, 1947 | Good Standing |
| THE FOOTHILLS FISH AND GAME CLUBLongmont, CO · Good Standing | Longmont, CO | Nonprofit | May 18, 1948 | Good Standing |
| ESTES PARK SUMMER RESIDENTS ASSOCIATION, INC.Longmont, CO · Good Standing | Longmont, CO | Nonprofit | Aug 26, 1955 | Good Standing |
| THE CALVARY BAPTIST CHURCH OF LONGMONTLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Jan 19, 1956 | Good Standing |
| LONGMONT LODGE NO. 1548, LOYAL ORDER OF MOOSE, INCORPORATEDLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Feb 14, 1956 | Good Standing |
| LONGMONT CHURCH OF THE NAZARENELongmont, CO · Good Standing | Longmont, CO | Nonprofit | Mar 28, 1956 | Good Standing |
| GOLDEN WEST MILLING COMPANY, Delinquent October 1, 2010Longmont, CO · Delinquent | Longmont, CO | Corporation | Aug 13, 1956 | Delinquent |
| LEHMAN COMMUNICATIONS CORPORATIONLongmont, CO · Merged | Longmont, CO | Corporation | Jan 31, 1957 | Merged |
| GOLDEN TRANSFER COMPANYLongmont, CO · Merged | Longmont, CO | Corporation | Aug 7, 1959 | Merged |
| GOLDEN VAN LINES, INC.Longmont, CO · Good Standing | Longmont, CO | Corporation | Aug 7, 1959 | Good Standing |
| Longmont Humane SocietyLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Nov 25, 1959 | Good Standing |
| MERL, INC.Longmont, CO · Good Standing | Longmont, CO | Corporation | Apr 26, 1960 | Good Standing |
| BOLIND, INC.Longmont, CO · Good Standing | Longmont, CO | Corporation | Jun 2, 1960 | Good Standing |
| OUR SAVIOR'S EV. LUTHERAN CHURCH OF LONGMONT, COLO.Longmont, CO · Good Standing | Longmont, CO | Nonprofit | Jun 15, 1960 | Good Standing |
| LONGMONT CHRISTIAN HOUSING, INC.Longmont, CO · Delinquent | Longmont, CO | Nonprofit | Jan 17, 1961 | Delinquent |
| WESTERN FOUNDRIES, INC.Longmont, CO · Good Standing | Longmont, CO | Corporation | Jun 30, 1961 | Good Standing |
| WAUGAMAN ASSOCIATES, INC., Dissolved August 1, 2003Longmont, CO · Administratively Dissolved | Longmont, CO | Corporation | Oct 3, 1961 | Administratively Dissolved |
| FaithPoint - a baptist churchLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Apr 12, 1962 | Good Standing |
| CLAY INVESTMENT CO., Dissolved December 15, 2017Longmont, CO · Voluntarily Dissolved | Longmont, CO | Corporation | Jul 25, 1962 | Voluntarily Dissolved |
| LONGMONT LODGE NO. 1055, BENEVOLENT AND PROTECTIVE ORDEROF ELKS OF THE UNITED STATES OF AMERICA,Longmont, CO · Good Standing | Longmont, CO | Nonprofit | Apr 25, 1963 | Good Standing |
| SOMBRERO RANCHES, INC.Longmont, CO · Good Standing | Longmont, CO | Corporation | Apr 21, 1954 | Good Standing |
| WALCK ELECTRIC SERVICE, INC., Dissolved November 1, 1998Longmont, CO · Administratively Dissolved | Longmont, CO | Corporation | Jan 2, 1964 | Administratively Dissolved |
| 7-11 RANCH INCLongmont, CO · Good Standing | Longmont, CO | Corporation | Mar 29, 1963 | Good Standing |
| C & H FURNITURE, INC., Delinquent June 1, 2006Longmont, CO · Delinquent | Longmont, CO | Corporation | Apr 1, 1965 | Delinquent |
| LONGMONT MEMORIALS, INC., Delinquent March 1, 2017Longmont, CO · Delinquent | Longmont, CO | Corporation | Oct 8, 1965 | Delinquent |
| ST. STEPHEN'S EPISCOPAL CHURCH OF LONGMONT, COLORADOLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Oct 4, 1956 | Good Standing |
| CHIUSO, INC., Dissolved March 6, 2000Longmont, CO · Voluntarily Dissolved | Longmont, CO | Corporation | Sep 13, 1966 | Voluntarily Dissolved |
| NEW CREATION MINISTRIES AND WORLD OUTREACH CENTER CHURCHLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Nov 23, 1937 | Good Standing |
| LONGMONT CHURCH OF GOD, Dissolved February 21, 2006Longmont, CO · Voluntarily Dissolved | Longmont, CO | Nonprofit | Dec 5, 1966 | Voluntarily Dissolved |
| LONGMONT SYMPHONY SOCIETY, INC.Longmont, CO · Good Standing | Longmont, CO | Nonprofit | Dec 14, 1966 | Good Standing |
| ENGINEERING MEASUREMENTS COMPANY, Dissolved December 24, 2002Longmont, CO · Voluntarily Dissolved | Longmont, CO | Corporation | Jan 4, 1967 | Voluntarily Dissolved |
| MOUNTAIN TRUCK AND EQUIPMENT CO.Longmont, CO · Good Standing | Longmont, CO | Corporation | Sep 16, 1946 | Good Standing |
| WESTVIEW PRESBYTERIAN CHURCHLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Apr 29, 1965 | Good Standing |
| LONGMONT BASEBALL LEAGUE, INC.Longmont, CO · Good Standing | Longmont, CO | Nonprofit | Feb 19, 1968 | Good Standing |
| THE EISELE LATERAL DITCH COMPANYLongmont, CO · Good Standing | Longmont, CO | Nonprofit | Mar 11, 1968 | Good Standing |
| THE FLANDERS FOUNDATION, INC., Dissolved August 5, 2004Longmont, CO · Voluntarily Dissolved | Longmont, CO | Nonprofit | Jun 28, 1968 | Voluntarily Dissolved |
| CALVARY LUTHERAN CHURCH, INC., Dissolved March 23, 2004Longmont, CO · Voluntarily Dissolved | Longmont, CO | Nonprofit | Jun 10, 1969 | Voluntarily Dissolved |
| C. L. ROWLEY, D.D.S., P.C., Dissolved April 29, 1999Longmont, CO · Voluntarily Dissolved | Longmont, CO | Corporation | Sep 2, 1969 | Voluntarily Dissolved |
| R J A, INC.Longmont, CO · Good Standing | Longmont, CO | Corporation | Sep 16, 1969 | Good Standing |
| BRANCH ELECTRIC, INC.Longmont, CO · Good Standing | Longmont, CO | Corporation | Jan 2, 1970 | Good Standing |
| THE FIRST FREE METHODIST CHURCH OF LONGMONT, COLORADO, Delinquent March 1, 2006Longmont, CO · Delinquent | Longmont, CO | Nonprofit | Jun 29, 1970 | Delinquent |
| W-P INSTRUMENTS, INC., Delinquent July 1, 2009Longmont, CO · Delinquent | Longmont, CO | Corporation | Jul 14, 1970 | Delinquent |
| A A A ELECTRIC COMPANY, INC.Longmont, CO · Good Standing | Longmont, CO | Corporation | Jul 22, 1970 | Good Standing |
| JAY C. MILLS, P.C., Delinquent October 1, 2006Longmont, CO · Delinquent | Longmont, CO | Corporation | Aug 28, 1970 | Delinquent |
| COLORODANS OF LONGMONT, INC., Dissolved September 5, 2023Longmont, CO · Voluntarily Dissolved | Longmont, CO | Nonprofit | May 3, 1968 | Voluntarily Dissolved |
| SPANGLER ENTERPRISES, INC., Delinquent May 1, 2007Longmont, CO · Delinquent | Longmont, CO | Corporation | Nov 10, 1970 | Delinquent |