Johnston Gas Co is located at 1209 Hartford Ave, Johnston, RI. This business specializes in Gas Companies. Johnston Gas Co is open Mon, 6:05am-9:05pm; Tue, 6:05am-9:05pm; Wed, 6:05am-9:05pm; Thu, 6:05am-9:05pm; Fri, 6:05am-9:05pm; Sat, 6:05am-9:05pm; Sun, 6:05am-9:05pm and accepts American Express, Cash, Discover, Mastercard, Personal Checks and Visa.