What Is ELI5 - Why is Hilo not considered the oldest city in the US when it dates back to around 1100 AD

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Last updated: April 8, 2026

Quick Answer: Hilo, Hawaii, is not considered the oldest continuously inhabited city in the United States despite archaeological evidence dating back to around 1100 AD because it lacks formal incorporation as a city until much later, in 1911. The title of oldest city typically goes to St. Augustine, Florida, founded in 1565 by Spanish settlers, which has maintained continuous municipal governance. Hilo's early history involves Polynesian settlement around 1100 AD, but it remained a small village until American missionaries arrived in the 1820s, and it wasn't officially recognized as a city until the 20th century. Criteria for 'oldest city' often prioritize European-founded settlements with documented continuous incorporation, overshadowing indigenous communities like Hilo.

Key Facts

Hilo's archaeological evidence dates back to around 1100 AD with Polynesian settlement
Hilo was officially incorporated as a city in 1911
St. Augustine, Florida, founded in 1565, is widely recognized as the oldest continuously inhabited city in the U.S.
American missionaries arrived in Hilo in the 1820s, influencing its development
Criteria for 'oldest city' often emphasize European-founded settlements with continuous municipal records

Overview

Hilo, located on the Big Island of Hawaii, has a rich history rooted in Polynesian settlement, with archaeological findings such as ancient fishponds and agricultural terraces indicating human activity dating back to approximately 1100 AD. These early inhabitants, likely from the Marquesas Islands, established a community based on fishing and farming, but Hilo remained a small, decentralized village for centuries. In contrast, St. Augustine, Florida, was founded by Spanish explorer Pedro Menéndez de Avilés in 1565, making it the oldest continuously inhabited European-established settlement in the continental U.S., with documented municipal governance from its inception. The distinction in 'oldest city' claims often hinges on formal incorporation and continuous records; while Hilo's indigenous history is ancient, it lacked structured city status until American influence in the 19th and 20th centuries, leading to its exclusion from top rankings in historical city lists.

How It Works

The determination of the 'oldest city' in the U.S. involves evaluating historical evidence, incorporation dates, and continuity of habitation. Archaeologists use methods like carbon dating on artifacts and site excavations to establish early settlement dates, as seen in Hilo's case with relics from around 1100 AD. For official recognition, historians and organizations such as the National Park Service rely on documented founding events and municipal records; St. Augustine's 1565 founding is well-documented in Spanish archives, providing clear evidence of continuous settlement. In Hilo, the transition from a Polynesian village to an incorporated city occurred gradually: after American missionaries arrived in the 1820s, it grew as a port town, but formal city status wasn't granted until 1911 by the Territory of Hawaii. This process highlights how criteria prioritize European colonial history and legal incorporation over indigenous timelines, often marginalizing older Native American or Polynesian settlements in such designations.

Why It Matters

Understanding why Hilo isn't considered the oldest city matters because it reflects broader issues in historical recognition and cultural representation. This distinction impacts tourism and heritage preservation, as cities like St. Augustine attract visitors based on their 'oldest' status, boosting local economies. For indigenous communities in Hawaii, it underscores the erasure of pre-colonial histories, emphasizing the need to acknowledge Polynesian contributions beyond European frameworks. In academic and public discourse, it encourages a reevaluation of criteria for historical significance, promoting inclusivity of diverse settlement narratives in U.S. history.