Exhibit 99.1

CSB BANCORP, INC. REPORTS THIRD QUARTER EARNINGS

Third Quarter Highlights

Millersburg, Ohio – October 21, 2015 – CSB Bancorp, Inc. (CSBB) today announced third quarter 2015 net income of $1,556,000 or $.57 per basic and diluted share, as compared to $1,507,000 or $.55 per basic and diluted share for the same period in 2014. For the nine month period ended September 30, 2015 net income totaled $4,415,000, compared to $4,445,000 for the same period last year.

Annualized returns on average common equity (“ROE”) and average assets (“ROA”) for the quarter were 10.27% and 0.98%, respectively, compared with 10.64% and 0.98% for the third quarter of 2014.

Eddie Steiner, President and CEO stated, “Revenue growth remains somewhat constrained by relatively slow economic expansion in our markets, aggressive competition among lenders, and very low interest rates. Average loan balances declined during the quarter but remained above year-ago levels, and credit quality as indicated by the percentage of nonperforming loans has improved to its best level in seven years.”

Revenue, on a fully-taxable equivalent basis, totaled $6.3 million during the quarter, a 2% increase from the prior-year third quarter. Net interest income improved by $71 thousand as compared to third quarter 2014, while other income increased $42 thousand attributable primarily to an increase in gain on sale of mortgage loans to the secondary market and an increase in debit card interchange fees.

Non-interest expense amounted to $3.9 million during the quarter, an increase of $174 thousand or 5% from third quarter 2014. The Company’s third quarter efficiency ratio amounted to 62.4% as compared to 60.8% for the same quarter in the prior year. Salary and employee benefits rose $99 thousand, or 5%, on a quarter over prior year quarter with increases in base salary, medical and employment taxes.

Net interest margin amounted to 3.43% for the quarter compared to 3.58% from the linked June quarter and 3.53% for the prior year’s third quarter. The margin decrease year over year resulted from a 14 basis point decrease in average yield on earning assets partially offset with a 4 basis point decrease in average interest costs on all liabilities. The sustained low interest rate environment with resultant periodic rate decreases on certain long-term loans with scheduled rate repricing, and deposit growth which has outpaced loan growth over the past year, have contributed to the lower margins year over year. On a linked quarter basis, decreases were recognized in asset yields and loan balances during third quarter 2015, while deposit balances increased and liability costs were unchanged as compared to the quarter ended June 2015.

Federal income tax provision totaled $687 thousand in third quarter 2015, compared to $674 thousand for the same quarter in 2014 reflecting a stable effective tax rate of 31% for the comparable quarters.

Average total assets during the quarter amounted to $633 million, an increase of $25 million or 4% above the same quarter of the prior year. Average loan balances of $408 million were $0.5 million or less than 1% above prior year third quarter, while average securities balances of $148 million increased $10 million or 7% as compared to third quarter 2014.

Average commercial loan balances for the quarter, including commercial real estate, decreased $3 million or 1% from prior year levels. Average residential mortgage balances increased by $3 million or 4% over the prior year’s quarter. The increase of mortgage balances was the result of the bank originating and retaining some 15 year fixed rate mortgages. Average home equity balances decreased $538 thousand or 1% and average consumer credit balances increased $1 million or 16% versus the same quarter of the prior year.

The Company did not fund a loan loss provision during the third quarter 2015 due to declines in delinquent loans and nonperforming assets. Delinquent loan balances as of September 30, 2015 amounted to 0.7% of total loans as compared to 1.5% at September 30, 2014. Nonperforming assets totaled $2.0 million or 0.49% of total loans plus other real estate, a decrease from $4.7 million or 1.14% of total loans plus other real estate at September 30, 2014. The allowance for loan losses amounted to 1.12% of total loans on September 30, 2015.

Net loan charge-offs during third quarter 2015 were $25 thousand compared to third quarter 2014 net loan recoveries of $2 thousand. Annualized net charge-offs equated to 0.02% of average loans in the current quarter.

Average deposit balances for third quarter 2015 totaled $503 million, an increase of $21 million, or 4%, from the prior year’s third quarter. Within the deposit category, average noninterest-bearing account balances for the third quarter increased by $18 million, or 14% above the same period in the prior year. Average interest-bearing checking, money market and traditional savings balances increased $9 million or 4% from year ago levels, while average time deposit balances decreased $5 million or 4% from third quarter 2014. In addition to the changes in average deposit balances, the average balance of securities sold under repurchase agreement during the third quarter of 2015 grew by $3 million or 6% above the average for the same period in the prior year. The repurchase agreements, while considered short-term borrowings, are primarily tied to overnight customer sweep accounts.

Shareholders’ equity totaled $60.5 million on September 30, 2015 with 2.7 million common shares outstanding. The tangible equity to assets ratio amounted to 8.8% on September 30, 2015, as compared to 8.4% on September 30, 2014. The Company declared a common dividend of $.19 per share during the quarter. Based on the September 30, 2015 closing stock price of $24.20 per share, the Company’s annual dividend yield approximates 3.1%.

About CSB Bancorp, Inc.

CSB is a financial holding company headquartered in Millersburg, Ohio, with approximate assets of $632 million as of September 30, 2015. CSB provides a complete range of banking and other financial services to consumers and businesses through its wholly owned subsidiary, The Commercial and Savings Bank, with sixteen banking centers in Holmes, Wayne, Tuscarawas and Stark counties and Trust offices located in Millersburg and Wooster, Ohio.

Forward-Looking Statement

This release contains forward-looking statements relating to present or future trends or factors affecting the banking industry, and specifically the financial condition and results of operations, including without limitation, statements relating to the earnings outlook of the Company, as well as its operations, markets and products. Actual results could differ materially from those indicated. Among the important factors that could cause results to differ materially are interest rate changes, softening in the economy, which could materially impact credit quality trends and the ability to generate loans, changes in the mix of the Company’s business, competitive pressures, changes in accounting, tax or regulatory practices or requirements and those risk factors detailed in the Company’s periodic reports and registration statements filed with the Securities and Exchange Commission. The Company undertakes no obligation to release revisions to these forward-looking statements or reflect events or circumstances after the date of this release.

Contact Information:

Paula J. Meiler, SVP & CFO

330-763-2873

paula.meiler@csb1.com

CSB BANCORP, INC.

CONSOLIDATED FINANCIAL HIGHLIGHTS

NOTES:

(a) - Net Interest income on a fully tax-equivalent (“FTE”) basis restates interest on tax-exempt securities and loans as if such interest were subject to federal income tax at the statutory rate. Net interest income on an FTE basis differs from net interest income under U.S. generally accepted accounting principles.

CSB BANCORP, INC.

CONSOLIDATED BALANCE SHEETS

CSB BANCORP, INC.

CONSOLIDATED STATEMENTS OF INCOME