Port Chicago: The Rise, Ruin, and Erasure of a California Town
Port Chicago began as a small waterfront settlement on Suisun Bay, originally known as Bay Point. Its roots stretched back to the early 1850s, when Anglo-American settlers such as Josiah Knight, Samuel E. Strode, and Daniel Cunningham established homesteads along the Suisun Bay coast. Cunningham became the first permanent settler, acquiring land originally granted by President Ulysses S. Grant to H. H. Smith and Mr. Clark. Over the next decades, the area developed through phases of industry: a smelter at Seal Bluff for the Copper King Smelting Company, a lumber warehouse built by C. A. Smith in 1907, and the formal creation of Bay Point when the Bay Point Land Company filed its plat map at the Contra Costa County Recorder’s Office. A shipyard operated during World War I, and workers lived in nearby Clyde, a town built specifically to support the wartime effort.
By the late nineteenth and early twentieth centuries, Bay Point had grown around the Southern Pacific Railroad line, which divided the settlement into two distinct halves: the northern industrial zone near Suisun Bay and the southern residential and commercial district. The rail corridor brought freight, workers, and a modest commercial presence to the area. Life moved at a rural pace until the late 1930s, when the U.S. Navy selected the site for a major munitions loading facility. In 1931, as the Great Depression worsened, Walter Van Winkle successfully petitioned to rename Bay Point to Port Chicago, after the Illinois city. The town’s identity shifted dramatically. New housing appeared, businesses expanded, and by 1960 Port Chicago had a population of 1,746 residents, a small but stable community whose economy had become inseparable from the Navy’s operations.
The night of July 17, 1944, marked the turning point in Port Chicago’s history. At 10:18 p.m., a catastrophic explosion tore through the Naval Magazine as two ships were being loaded with ammunition. The blast was felt across the Bay Area, shattering windows miles away and lighting the sky with a flash mistaken for an earthquake. Three hundred and twenty men were killed, most of them young African American sailors assigned to hazardous loading work under segregated Navy policy. The pier was obliterated, the ships destroyed, and the community left traumatized. More than 300 buildings in town were damaged by falling debris, including hot metal and unexploded bombs, and over 100 civilians were injured - though none were killed. The disaster exposed deep racial inequities within the Navy, led to the controversial Port Chicago Mutiny trial, and ultimately contributed to the desegregation of the U.S. military. For the town itself, the explosion marked the beginning of a slow unraveling.
In the decades that followed, Port Chicago continued to exist, but its future narrowed. The Navy rebuilt the loading facilities and resumed operations, yet the town remained small, isolated, and economically dependent on the base. As Contra Costa County modernized - Concord expanding, Bay Point shifting commercially, and new highways redirecting traffic - Port Chicago’s position became increasingly precarious. The town sat inside a tightening military perimeter, wedged between the waterfront and the weapons station. By the early 1960s, the Navy’s security requirements had evolved to the point where a civilian community in the middle of a weapons facility was no longer considered acceptable.
The closure of Port Chicago unfolded through a series of official decisions. In 1968, the Navy announced that the town would be shut down and absorbed into the Concord Naval Weapons Station. All property was acquired, and the buildings were demolished to form a safety zone around the loading docks. Residents were informed that their homes would be purchased and that relocation would be mandatory. The process was contentious and emotional. Many families accepted the Navy’s buyout offers, but others resisted, arguing that the compensation was inadequate and that the government was overreaching its authority.
Among those who fought back was Mrs. Eunice Van Winkle, one of the residents represented by San Francisco attorney Melvin Belli. Belli, known nationally for his high-profile cases and theatrical courtroom style, challenged the Navy’s actions on behalf of residents who believed the forced relocation was unjust. He argued that the government had undervalued homes, failed to negotiate fairly, and violated the rights of citizens whose families had lived in Port Chicago for decades. His involvement brought media attention to the closure and framed it as a struggle between ordinary Americans and federal power. Records indicate that Van Winkler was not the only resident to seek legal representation, though Belli’s name is the one most prominently associated with the fight. Several families pursued legal action, contesting property valuations and the legality of dissolving an entire town for military expansion. Ultimately, the courts sided with the Navy, ruling that national security needs justified the acquisition and closure.
The last residents left in the summer of 1968, with most accounts placing the final departures around August. After that point, Port Chicago existed only as a name on paper. The Navy fenced off the streets, demolished the buildings, and absorbed the land into the weapons station. The town disappeared physically, but not emotionally. Former residents continued to return to the site for years afterward. Some came quietly, standing where their homes once stood. Others organized reunions, gathering at the edges of the restricted zone to keep the memory of their community alive. These visits served as acts of remembrance and protest - reminders that Port Chicago had been more than a military asset, that it had been a home.
Over time, the memory of Port Chicago shifted from lived experience to historical narrative. The site of the 1944 explosion is now preserved as the Port Chicago Naval Magazine National Memorial, but the town itself is gone. Its streets no longer exist, its houses vanished, and its name survives only in records, recollections, and the stories of those who once lived there. The arc of Port Chicago’s history is stark: a rural settlement transformed by war, devastated by disaster, constrained by military expansion, and ultimately dissolved by federal decree. Its legacy endures through the voices of former residents, the legal battles that marked its final years, and the ongoing efforts to honor the sailors who died in the explosion that changed everything.
A Speculative Note on Timing and the Zodiac Case
No documentary evidence places the Zodiac killer in Port Chicago. The following is offered only as a speculative environmental hypothesis consistent with the geographic working profile developed elsewhere on this site.
The civilian community of Port Chicago was dissolved in the summer of 1968. The first confirmed Zodiac murders occurred later that same year. In the working geographic profile, northern Contra Costa County is treated as the strongest current residential hypothesis, with the Port Chicago area noted as a possible early residence only. The timing of the town’s closure therefore sits immediately before the start of the known crime series.
If the offender had lived in or near Port Chicago, the forced erasure of the community would have constituted a significant rupture - loss of place, of continuity, and of a stable local identity. Such an event can function as a stressor for an individual already predisposed toward alienation or the need to construct a powerful public persona. This possibility aligns with the broader motivational framework of coveting control and authorship, and with the hypothesis that the creation of “Zodiac” served, in part, as an attempt to leave a permanent name.
Melvin Belli’s representation of certain Port Chicago residents is a matter of record. The Zodiac later wrote to Belli. The coincidence is noted without further interpretive weight.
The value of the Port Chicago material remains primarily historical and geographic. It supplies context for a possible early residential node and a concurrent life event that may have held personal significance. It does not identify the offender, nor does it convert temporal proximity into proof of origin.
Negative Check
The early-Port-Chicago hypothesis would be weakened or eliminated by any of the following:
- Clear evidence that the offender’s residential history in the mid-to-late 1960s lay entirely outside northern Contra Costa County and the former Port Chicago / Clyde corridor.
- Documentary proof that the “no address” phrase and the relevant Z32 geographic references are better explained by a different, non-Contra Costa location.
- A demonstrated residential or operational base that more economically accounts for the crime locations, letter-mailing patterns, and escape routes without requiring an eastern Contra Costa node.
- Evidence that the 1968 closure of Port Chicago had no plausible temporal or personal relevance to the start of the series (for example, a firmly established residence and stable life circumstances elsewhere throughout 1967–1969).
Until one or more of these conditions is met, the hypothesis remains a geographic and contextual possibility only. It is retained because it is consistent with the broader northern Contra Costa working area and with the timing of the first confirmed crimes; it is not retained because it has been affirmatively proven.