In the newly founded canton of Río Cuarto, the election of mayor and members of the City Council was held for the first time.

[2] As in previous elections the three main parties in number of mayors were the National Liberation Party (PLN) with 42 (losing 8 mayors including the provincial capitals of Cartago and Liberia from the previous elections in 2016), Social Christian Unity (PUSC) with 15, winning one extra mayor, and the Citizens' Action Party (PAC) with 4 (five if Montes de Oca's PAC-lead ruling coalition is counted), losing 2 from the prior reelection.

[3] The newly founded liberal party United We Can founded by former Libertarian deputy Natalia Diaz won the mayoralty of Oreamuno and had important support in several cantons, whilst Cartago was won by former deputy and presidential nominee Mario Redondo Poveda from Christian Democratic Alliance.

We Are Moravia won in Moravia, United Communal in Turrubares, Palmares First in Palmares, Sarchí Alliance in Sarchí, Santo Domingo Advance Movement in Santo Domingo, The Great Nicoya in Nicoya, Authentic Santacrucian in Santa Cruz, Nandayure Progresses in Nandayure, Authenthic Limonense in Limón and Recovering Values in Pococí won the mayoralties of their cantons, and the already locally dominant 21st Century Curridabat was re-elected in Curridabat.

[14][15][16] Originally in the canton of San José a coalition was planned under the Chepe Coalition banner alongside the provincial VAMOS party endorsing the candidacy of the independent Fernando Cartín and nominating the two vice mayor's offices, however the Electoral Court dissolved the coalition alleging that the VAMOS party did not nominated any candidate thus Cartín still ran but as an official PAC candidate (with VAMOS still as external supporter).