In Elizabeth, Route 27 narrows to two lanes and becomes Rahway Avenue, crossing Route 439 and continuing to the northeast through residential and commercial areas. Route 27 splits into a one-way pair with northbound Route 27 following Rahway Avenue east and turning north onto Cherry Street and southbound Route 27 following Westfield Avenue west and turning south onto Chilton Avenue. The southbound direction of Route 27 intersects the eastern terminus of Route 28, where that route continues west on Westfield Avenue. Past the one-way pair, Route 27 resumes east on four-lane Westfield Avenue, turning north onto Broad Street. The route heads into a more urbanized setting and continues northeast onto Newark Avenue, intersecting the northern terminus of Route 439. Through Elizabeth, about 10,000 to 20,000 vehicles travel on Route 27 every day.