| $350,000–1 million | PRIMROSE ALZHEIMER'S LIVING, INC. | SANTA ROSA, CA | Customers Bank |
| $350,000–1 million | PROMISE ENERGY INC. | SANTA ROSA, CA | Beneficial State Bank |
| $150,000–350,000 | PROTONEX LLC | SANTA ROSA, CA | People's Bank of Seneca |
| $150,000–350,000 | PSYCHSTRATEGIES, INC. | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | PW JADE, LLC DBA RIGHT AT HOME - SONOMA | SANTA ROSA, CA | JPMorgan Chase Bank, National Association |
| $1–2 million | QUATTROCCHI AND KWOK ARCHITECTS | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | R G PLUMBING GROUP, INC. | SANTA ROSA, CA | Redwood CU |
| $150,000–350,000 | R&S LOGISTICS, LLC | SANTA ROSA, CA | Tri Counties Bank |
| $350,000–1 million | RAEL BERNSTEIN D.D.S. A PROFESSIONAL C | SANTA ROSA, CA | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | RANDAL OPTIMAL NUTRIENTS, INC. | SANTA ROSA, CA | WesBanco Bank, Inc. |
| $150,000–350,000 | RBD ONLINE, INC. | SANTA ROSA, CA | Bank of Marin |
| $350,000–1 million | RCX, INC. | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | RECHIN INC | SANTA ROSA, CA | American River Bank |
| $350,000–1 million | RED CLOVER WORKER'S BRIGADE | SANTA ROSA, CA | Summit State Bank |
| $150,000–350,000 | REDWOOD EMPIRE DERMATOLOGY, INC. | SANTA ROSA, CA | Poppy Bank |
| $350,000–1 million | REDWOOD EMPIRE FOOD BANK | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | REDWOOD EMPIRE STEREOCASTERS | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | REDWOOD ORTHOPAEDIC SURGERY ASSOCIATES, A MED CORP. | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | REDWOOD PEDIATRIC THERAPY ASSOCIATES, INC. | SANTA ROSA, CA | Redwood CU |
| $350,000–1 million | REDWOOD RADIOLOGY GROUP, INC. | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | REDWOOD RESIDENTIAL FENCE COMPANY | SANTA ROSA, CA | Bank of the West |
| $150,000–350,000 | REESE AND ASSOCIATES | SANTA ROSA, CA | Poppy Bank |
| $150,000–350,000 | RELIABLE HARDWARE & STEEL CO, INC. | SANTA ROSA, CA | Redwood CU |
| $150,000–350,000 | RELIABLE LIQUID TRANSPORT, INC. | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | RESULTS RADIO, LLC | SANTA ROSA, CA | Umpqua Bank |
| $150,000–350,000 | REYES GROUP ENTERPRISES, INC. | SANTA ROSA, CA | JPMorgan Chase Bank, National Association |
| $350,000–1 million | RGH GEOTECHNICAL & ENVIRONMENTAL CONSULTANTS, INC | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | RHAB, INC. | SANTA ROSA, CA | First Bank of the Lake |
| $150,000–350,000 | RHB BUILDERS, LLC | SANTA ROSA, CA | Exchange Bank |
| $1–2 million | RICH DOSS, INC. | SANTA ROSA, CA | Summit State Bank |
| $1–2 million | RICHARD HANCOCK, INC. | SANTA ROSA, CA | Umpqua Bank |
| $150,000–350,000 | RIPTIDE CONSTRUCTION INCORPORATED | SANTA ROSA, CA | Umpqua Bank |
| $150,000–350,000 | RIVERBEND FUNDING, LLC | SANTA ROSA, CA | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | RIVIERA RESTAURANT INC | SANTA ROSA, CA | Customers Bank |
| $150,000–350,000 | RN CONSTRUCTION | SANTA ROSA, CA | Summit State Bank |
| $350,000–1 million | ROBERT KLINE CONSTRUCTION, INC. | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | ROGOWAY LAW GROUP, A PROFESSIONAL CORPORATION | SANTA ROSA, CA | Redwood CU |
| $350,000–1 million | ROMAN CATHOLIC BISHOP OF SANTA ROSA | SANTA ROSA, CA | Summit State Bank |
| $150,000–350,000 | ROMAN CATHOLIC WELFARE CORPORATION | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | ROOTER KING INC | SANTA ROSA, CA | Celtic Bank Corporation |
| $150,000–350,000 | ROSS RECREATION EQUIPMENT COMPANY, INC. | SANTA ROSA, CA | Readycap Lending, LLC |
| $150,000–350,000 | ROSSO PIZZERIA ENOTECA LLC | SANTA ROSA, CA | Redwood CU |
| $350,000–1 million | ROWLAND ENTERPRISES | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | RUSSIAN RIVER WINERY INC. | SANTA ROSA, CA | Bank of the West |
| $150,000–350,000 | S&T ANKER INC. | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | S.J. CIMINO ELECTRIC, INC. | SANTA ROSA, CA | Customers Bank |
| $150,000–350,000 | S.S.SKIKOS ENTERPRISES, LLC | SANTA ROSA, CA | Umpqua Bank |
| $1–2 million | SAFARI WEST, INC. | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SALTIO INC | SANTA ROSA, CA | Wells Fargo Bank, National Association |
| $150,000–350,000 | SAMUELSON TINGO CONSTRUCTION, LLC | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | SAN CARLOS CINEMAS, INC. | SANTA ROSA, CA | Poppy Bank |
| $350,000–1 million | SANCHIETTI FARMING INC | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SANTA ROSA BACK AND PHYSICAL THERAPY INC | SANTA ROSA, CA | Tri Counties Bank |
| $150,000–350,000 | SANTA ROSA BIBLE CHURCH | SANTA ROSA, CA | Poppy Bank |
| $350,000–1 million | SANTA ROSA CAMPWAY INC | SANTA ROSA, CA | Umpqua Bank |
| $350,000–1 million | SANTA ROSA CERAMIC TILE CENTER INC | SANTA ROSA, CA | Umpqua Bank |
| $350,000–1 million | SANTA ROSA ENTERTAINMENT COMPANY, LLC | SANTA ROSA, CA | Bank of America, National Association |
| $150,000–350,000 | SANTA ROSA MEMORIAL PARK | SANTA ROSA, CA | Exchange Bank |
| $1–2 million | SANTA ROSA ORTHOPAEDIC MEDICAL GROUP, INCORPORATED | SANTA ROSA, CA | River City Bank |
| $150,000–350,000 | SANTA ROSA SEAFOOD RETAIL, INC. | SANTA ROSA, CA | JPMorgan Chase Bank, National Association |
| $350,000–1 million | SANTA ROSA STAINLESS STEEL | SANTA ROSA, CA | Beneficial State Bank |
| $350,000–1 million | SANTA ROSA SYMPHONY ASSOCIATION | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SANTA ROSA VEIN ASSOCIATES | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SAP SOLUTIONS, INC. | SANTA ROSA, CA | Riverview Bank |
| $150,000–350,000 | SARTIN DENNY PRODUCTIONS, LLC | SANTA ROSA, CA | Redwood CU |
| $150,000–350,000 | SAV & ZAC INC. | SANTA ROSA, CA | Customers Bank |
| $150,000–350,000 | SCHULTZ BROTHERS VAN AND STORAGE | SANTA ROSA, CA | Summit State Bank |
| $350,000–1 million | SCHURTER, INC. | SANTA ROSA, CA | City National Bank |
| $150,000–350,000 | SCOTT AG LLC | SANTA ROSA, CA | Summit State Bank |
| $150,000–350,000 | SEA NOODLE BAR, INC. | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SEA THAI BISTRO, INC. | SANTA ROSA, CA | Bank of America, National Association |
| $150,000–350,000 | SEQUOIA WHOLESALE FLORIST INC | SANTA ROSA, CA | KeyPoint CU |
| $350,000–1 million | SHANNON MASONRY CONSTRUCTION, INC. | SANTA ROSA, CA | Umpqua Bank |
| $150,000–350,000 | SHAPIRO GALVIN SHAPIRO & MORAN, A PROFESSIONAL CORPORATION | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SIFT CUPCAKE & DESSERT BAR | SANTA ROSA, CA | Umpqua Bank |
| $150,000–350,000 | SIMPLY VIETNAM EXPRESS, LLC | SANTA ROSA, CA | JPMorgan Chase Bank, National Association |
| $1–2 million | SIMPSON SHEET METAL INC. | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SIRI GRADING & PAVING INC. | SANTA ROSA, CA | Savings Bank of Mendocino County |
| $150,000–350,000 | SIYAN CLINICAL CORPORATION | SANTA ROSA, CA | JPMorgan Chase Bank, National Association |
| $150,000–350,000 | SKY LOUNGE RESTAURANT INC | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SLR DREAMS INC | SANTA ROSA, CA | U.S. Bank, National Association |
| $150,000–350,000 | SMITH DOLLAR PC | SANTA ROSA, CA | Redwood CU |
| $1–2 million | SMOTHERS & WHITES INC | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | SMOTHERS PARTS INTERNATIONAL INC | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SOCO PRIVATE SECURITY, INC. | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SOCOBIKES, INC | SANTA ROSA, CA | Harvest Small Business Finance, LLC |
| $5–10 million | SONIC.NET LLC | SANTA ROSA, CA | Bank of America, National Association |
| $150,000–350,000 | SONOMA BEVERAGE COMPANY, LLC | SANTA ROSA, CA | City National Bank |
| $1–2 million | SONOMA COUNTRY DAY SCHOOL | SANTA ROSA, CA | Poppy Bank |
| $350,000–1 million | SONOMA COUNTRY FAIR AND EXPOSITION, INC | SANTA ROSA, CA | Exchange Bank |
| $350,000–1 million | SONOMA COUNTY FAMILY YOUNG MEN'S CHRISTIAN ASSOCIATION | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SONOMA COUNTY MEAT CO. LLC | SANTA ROSA, CA | Poppy Bank |
| $150,000–350,000 | SONOMA DESIGN APPAREL & PROMOTIONS INC | SANTA ROSA, CA | Mechanics Bank |
| $150,000–350,000 | SONOMA EYEWORKS AN OPTOMETRIC CORPORATIO | SANTA ROSA, CA | Bank of America, National Association |
| $150,000–350,000 | SONOMA HILL DEVELOPMENT LLC | SANTA ROSA, CA | Summit State Bank |
| $350,000–1 million | SONOMA LAND TRUST | SANTA ROSA, CA | Exchange Bank |
| $2–5 million | SONOMA MEDIA INVESTMENTS, LLC | SANTA ROSA, CA | Exchange Bank |
| $150,000–350,000 | SONOMA STAINLESS | SANTA ROSA, CA | Celtic Bank Corporation |
| $150,000–350,000 | SONOMA VALLEY FOODS, INC. | SANTA ROSA, CA | Redwood CU |
| $150,000–350,000 | SOULE BUILDING SYSTEMS, INC. | SANTA ROSA, CA | Bank of Marin |