| $350,000–1 million | 1045 LLC | CHESTERFIELD, MO | The Bank of Old Monroe |
| $150,000–350,000 | 15510 OLIVE BUILDING CORP. | CHESTERFIELD, MO | Montgomery Bank |
| $350,000–1 million | A.J. BROWN, INC. | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | ABBYLAYNE, LLC | CHESTERFIELD, MO | BMO Bank National Association |
| $350,000–1 million | ABM FEDERAL SALES, INC. | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | ACCOUNT RESOLUTION CORPORATION | CHESTERFIELD, MO | St. Louis Bank |
| $350,000–1 million | ACROPOLIS INVESTMENT MANAGEMENT, LLC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | ACUITY ANESTHESIOLOGY LLC | CHESTERFIELD, MO | PNC Bank, National Association |
| $2–5 million | ADVANCED RESOURCES GROUP INC. | CHESTERFIELD, MO | Midwest BankCentre |
| $150,000–350,000 | ADVANCED SOFTWARE DESIGNS, INC. | CHESTERFIELD, MO | Commerce Bank |
| $350,000–1 million | ADVANCED TRAINING AND REHAB LLC | CHESTERFIELD, MO | Lindell Bank & Trust Company |
| $350,000–1 million | AERO CHARTER, INC. | CHESTERFIELD, MO | Commerce Bank |
| $150,000–350,000 | ALIZADEH ORTHODONTICS | CHESTERFIELD, MO | UMB Bank, National Association |
| $150,000–350,000 | ALL OUTDOORS, INC. | CHESTERFIELD, MO | Bank of America, National Association |
| $150,000–350,000 | ALLERGY AND ASTHMA CARE OF ST. LOUIS | CHESTERFIELD, MO | Bank of Springfield |
| $150,000–350,000 | ALLIANCE TECHNOLOGIES LLC | CHESTERFIELD, MO | Carrollton Bank |
| $1–2 million | AMBASSADOR FLOORING CO | CHESTERFIELD, MO | Busey Bank |
| $1–2 million | AMERICAN DIRECT MARKETING RESOURCES, LLC | CHESTERFIELD, MO | U.S. Bank, National Association |
| $150,000–350,000 | AMERICAN TECHNOLOGY CORP | CHESTERFIELD, MO | PNC Bank, National Association |
| $350,000–1 million | AMINI'S GALLERIA, INC. | CHESTERFIELD, MO | St. Louis Bank |
| $150,000–350,000 | ANGELBECK LUMBER CO., INC. | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | ARCHLOGIX LLC | CHESTERFIELD, MO | St. Louis Bank |
| $350,000–1 million | ASCENSION CATHOLIC CHURCH | CHESTERFIELD, MO | Cass Commercial Bank |
| $350,000–1 million | ASSISTED RECOVERY CENTERS OF AMERICA, LLC | CHESTERFIELD, MO | Carrollton Bank |
| $150,000–350,000 | ASSOCIATES IN DERMATOLOGY & CUTANEOUS SURGERY | CHESTERFIELD, MO | St. Louis Bank |
| $150,000–350,000 | ATB TECHNOLOGIES, LLC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | AXIS WORLDWIDE SUPPLY CHAIN & LOGISTICS INC | CHESTERFIELD, MO | Bank of America, National Association |
| $150,000–350,000 | BADOCK RESTAURANTS INC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | BAKER POOL & SPA INC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | BBQ ILLINOIS I, LLC | CHESTERFIELD, MO | Bank of Washington |
| $150,000–350,000 | BD2 DEVELOPMENT, LLC | CHESTERFIELD, MO | Triad Bank |
| $150,000–350,000 | BECK/ALLEN SALES CORPORATION | CHESTERFIELD, MO | Midwest BankCentre |
| $150,000–350,000 | BELMONT PARTNERS SALES ST LOUIS, LLC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | BERRY SILBERBERG STOKES PC | CHESTERFIELD, MO | Midland States Bank |
| $150,000–350,000 | BIDNER ACQUISITION INC | CHESTERFIELD, MO | Cass Commercial Bank |
| $350,000–1 million | BLUETAIL MEDICAL GROUP LLC | CHESTERFIELD, MO | Simmons Bank |
| $150,000–350,000 | BONHOMME PRESBYTERIAN CHURCH | CHESTERFIELD, MO | Lindell Bank & Trust Company |
| $150,000–350,000 | BRADY MCCASLAND INC. | CHESTERFIELD, MO | St. Louis Bank |
| $150,000–350,000 | BRAND ASSET MANAGEMENT GROUP INC. | CHESTERFIELD, MO | Carrollton Bank |
| $350,000–1 million | BROADWAY LODGING LLC | CHESTERFIELD, MO | Carrollton Bank |
| $350,000–1 million | BRUBAKER & ASSOCIATES, INC. | CHESTERFIELD, MO | First Bank |
| $150,000–350,000 | BRUCE T FRAILEY | CHESTERFIELD, MO | U.S. Bank, National Association |
| $150,000–350,000 | BRUENING EMPLOYMENT CO LLC | CHESTERFIELD, MO | UMB Bank, National Association |
| $5–10 million | BUILDER'S BLOC ENTERPRISES, INC. | CHESTERFIELD, MO | Busey Bank |
| $350,000–1 million | BWTP, PC | CHESTERFIELD, MO | Triad Bank |
| $1–2 million | BYRNE SOFTWARE TECHNOLOGIES, INC | CHESTERFIELD, MO | Lindell Bank & Trust Company |
| $350,000–1 million | CALLISTO COMMUNICATIONS, LLC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $350,000–1 million | CAT5 COMMERCE, LLC | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | CBS INTERNATIONAL, LLC | CHESTERFIELD, MO | Commerce Bank |
| $2–5 million | CENTRAL MISSOURI PIZZA, INC | CHESTERFIELD, MO | The Central Trust Bank |
| $2–5 million | CENTURION INVESTMENTS INC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | CHESTERFIELD ACADEMY CHRISTIAN SCHOOL, INC. | CHESTERFIELD, MO | Peoples Savings Bank of Rhineland |
| $350,000–1 million | CHESTERFIELD DAY SCHOOL | CHESTERFIELD, MO | Commerce Bank |
| $1–2 million | CHESTERFIELD FENCE & DECK COMPANY, INC. | CHESTERFIELD, MO | Commerce Bank |
| $150,000–350,000 | CHESTERFIELD MONTESSORI SCHOOL | CHESTERFIELD, MO | Regions Bank |
| $150,000–350,000 | CHESTERFIELD PRESBYTERIAN CHURCH | CHESTERFIELD, MO | Cass Commercial Bank |
| $150,000–350,000 | CHESTERFIELD VALLEY CONSTRUCTION SERVICES, LLC | CHESTERFIELD, MO | Triad Bank |
| $150,000–350,000 | CHRISTINA PASSANISE | CHESTERFIELD, MO | U.S. Bank, National Association |
| $350,000–1 million | CLOUD TECHNOLOGY INNOVATIONS, LLC | CHESTERFIELD, MO | Midwest BankCentre |
| $350,000–1 million | CMS COMMUNICATIONS, INC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | COLLEEN & CO | CHESTERFIELD, MO | U.S. Bank, National Association |
| $150,000–350,000 | COMMUNICATIONS TECHNOLOGIES, INC | CHESTERFIELD, MO | Midwest BankCentre |
| $1–2 million | COMPREHENSIVE ANESTHESIA CARE, P.C. | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | CONCERCO INDUSTRIAL GROUP, LLC | CHESTERFIELD, MO | Peoples National Bank, National Association |
| $1–2 million | CONCERO TECHNOLOGY GROUP, LLC | CHESTERFIELD, MO | Peoples National Bank, National Association |
| $150,000–350,000 | CONSORTIUM FOR GRADUATE STUDY IN MANAGEMENT | CHESTERFIELD, MO | Bank of America, National Association |
| $150,000–350,000 | CORPORATE AIRCRAFT MANAGEMENT, INC | CHESTERFIELD, MO | First State Community Bank |
| $350,000–1 million | CORRPAK, INC | CHESTERFIELD, MO | Midwest BankCentre |
| $150,000–350,000 | COUNTYWIDE SERVICE, INC. | CHESTERFIELD, MO | St. Johns Bank and Trust Company |
| $5–10 million | CROWN PACKAGING CORP | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | CROWN PACKAGING/TEXAS, INC. | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | CT PARTNERS OF CHESTERFIELD | CHESTERFIELD, MO | U.S. Bank, National Association |
| $350,000–1 million | D2 PHARMA CONSULTING LLC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | DACO OF MISSOURI INC | CHESTERFIELD, MO | Midwest BankCentre |
| $150,000–350,000 | DAVE ENGINEERING LLC | CHESTERFIELD, MO | UMB Bank, National Association |
| $350,000–1 million | DCH LLC | CHESTERFIELD, MO | Bank of Washington |
| $350,000–1 million | DIAGNOSTIC IMAGING ASSOCIATES LTD | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | DOSTER, ULLOM, & BOYLE, LLC | CHESTERFIELD, MO | First State Bank of St Charles, Missouri |
| $350,000–1 million | DRIVEN SOLUTIONS, INC. | CHESTERFIELD, MO | Busey Bank |
| $350,000–1 million | E C ACQUISITION, LLC | CHESTERFIELD, MO | Carrollton Bank |
| $150,000–350,000 | EBM MEDICAL LLC | CHESTERFIELD, MO | St. Louis Bank |
| $150,000–350,000 | ECS AUTOMOTIVE CONCEPTS, LLC | CHESTERFIELD, MO | Commerce Bank |
| $1–2 million | ELITE ORTHOPEDICS LLC | CHESTERFIELD, MO | New Frontier Bank |
| $350,000–1 million | ELLIOTT DATA SYSTEMS MIDWEST, INC. | CHESTERFIELD, MO | First Community CU |
| $1–2 million | ENDEAVOR CAPITAL, LLC | CHESTERFIELD, MO | The Central Trust Bank |
| $350,000–1 million | ENGINEERING DESIGN SOURCE, INC. | CHESTERFIELD, MO | U.S. Bank, National Association |
| $2–5 million | EXPERITEC INC. | CHESTERFIELD, MO | Village Bank and Trust, National Association |
| $350,000–1 million | FEDERAL STEEL SUPPLY, LLC | CHESTERFIELD, MO | Webster Bank National Association |
| $350,000–1 million | FENSTER-MARTENS HOLDING COMPANY | CHESTERFIELD, MO | Busey Bank |
| $1–2 million | FERGUSON CONSULTING, INC. | CHESTERFIELD, MO | Busey Bank |
| $150,000–350,000 | FINISHING TRADES INSTITUTE OF THE MIDWEST | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $1–2 million | FISCHER & FRICHTEL CUSTOM HOMES, LLC | CHESTERFIELD, MO | The Central Trust Bank |
| $150,000–350,000 | FORUM, RX | CHESTERFIELD, MO | Montgomery Bank |
| $350,000–1 million | FRESH AIR HEATING & COOLING INC | CHESTERFIELD, MO | Lindell Bank & Trust Company |
| $150,000–350,000 | FRONTIER FINANCIAL, INC. | CHESTERFIELD, MO | First Mid Bank and Trust National Association |
| $350,000–1 million | GATEWAY GASTROENTEROLOGY, INC. | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $150,000–350,000 | GEORGIAN AEROSPACE LLC | CHESTERFIELD, MO | Enterprise Bank & Trust |
| $350,000–1 million | GLOBAL IMPORT SOLUTIONS, LLC | CHESTERFIELD, MO | Carrollton Bank |
| $150,000–350,000 | GLOBAL INDUSTRIAL COMMODITIES BROKERAGE | CHESTERFIELD, MO | U.S. Bank, National Association |
| $1–2 million | GNH SERVICES, INC | CHESTERFIELD, MO | Midwest BankCentre |