The Gridley Municipal Code, originally published by Book Publishing Company in 1981, has been kept current by regular supplementation.
   During original codification, the ordinances were compiled, edited and indexed by the editorial staff of Book Publishing Company. The code is organized by subject matter under an expandable three-factor decimal numbering system which is designed to facilitate supplementation without disturbing the numbering of existing provisions. Each section number designates, in sequence, the numbers of the title, chapter, and section. Thus, Section 18.12.050 is Section .050, located in Chapter .12 of Title 18. In most instances, sections are numbered by tens (.010, .020, .030, etc.), leaving nine vacant positions between original sections to accommodate future provisions. Similarly, chapters and titles are numbered to provide for internal expansion.
   In parentheses following each section is a legislative history identifying the specific sources for the provisions of that section. This legislative history is complemented by an ordinance disposition table, following the text of the code, listing by number all ordinances, their subjects, and where they appear in the codification.
   A subject-matter index, with complete cross-referencing, locates specific code provisions by individual section numbers.
   As of June 1, 1988, city staff commenced codification of ordinances starting with number 532 through Ordinance 634, passed May 2, 1994.
   The 2023 supplement was prepared by the staff of American Legal Publishing Corporation, which brings the code up-to-date through Ordinance 846-2023, passed May 15, 2023.