Inflation is becoming one of the critical variables in the economy. Any movement in inflation will cause some changes to fundamental economic variables, such as economic growth and unemployment. Therefore, inflation becomes a variable that is often observed and tested, both theoretically and empirically. Stable inflation is a prerequisite for sustainable economic growth, which ultimately benefits the improvement of people's well-being. Using city-level inflation data in East Java, this study aims to measure inflation's persistence at the city level in East Java. The persistence of inflation indicates the speed at which the inflation rate returns to its equilibrium level after a shock. This study will also analyze the causes of persistence in eight cities in East Java. In this study, to measure the degree of inflationary persistence, the study used an Autoregressive Univariate Model. The test results found that (1) inflation in eight cities in East Java tended to fluctuate throughout the research period. The highest inflation occurred in Probolinggo City, while the lowest was in Madiun City. The most significant contributors to inflation are food groups. Then (2) the result obtained is the degree of inflation persistence in eight cities in East Java is still relatively high, so it requires attention from regulators. Moreover, the persistence of inflation is caused by high inflation expectations or leading to forward-looking. Based on the findings, the government needs to devise a measured strategy to control inflation to be stable, such as optimizing the Regional Inflation Control Team (TPID).